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【判断题】
疫苗预防机构要主动索取相关证明恩建，并保存至超过疫苗有效期3年。A.
正确
B.
错误
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举一反三
A工作的紧后工作为B、C，A、B、C工作持续时间分别为8天、5天、4天，A工作最早开始时间为9天，B、C工作最迟完成时间分别为24天、21天，则A工作的总时差应为（ ）。
A.
0天
B.
1天
C.
2天
D.
3天
关于双代号时标网络计划，以下哪种说法是错误的（ ）。
A.
双代号时标网络计划必须以水平时间坐标为尺度表示工作时间
B.
时标网络计划能在图上直接显示出各项工作的开始与完成时间、工作的自由时差及关键线路
C.
时标网络计划中所有符号在时间坐标上的水平投影位置，都必须与其时间参数对应
D.
时标网络图的虚工作的水平段绘成波形线，表示其总时差
下列关于工期优化的基本方法的说明，不正确的是（ ）。
A.
工期优化的基本方法是改变网络中工作之间的逻辑关系
B.
选择关键工作并压缩其持续时间时，应选择优选系数最小的关键工作
C.
工期优化过程中，不能将关键工作压缩成非关键工作
D.
当所有关健工作的持续时间都已达到其能缩短的极限而工期仍不能满足要求工期时，应对计划的原技术方案，组织方案进行调整，或对要求工期重新审定
某工程网络计划中工作M的总时差和自由时差分别为6天和2天，该计划执行过程中经检查发现只有工作M的实际进度拖后3天，则工作M的实际进度（ ）。
A.
不影响总工期，但使其紧后工作的最早开始时间推迟1天
B.
不影响其后续工作的继续进行，但使总工期延长2天
C.
其紧后工作的最早开始时间推迟6天，并使总工期延长2天
D.
既不影响总工期，也不影响其后续工作的正常执行
在工程网络计划中，已经工作M的总时差和自由时差分别为4天和2天，检查其进度时发现，该工作持续时间延长了5天，说明此工作M的实际进度（ ）。
A.
不影响总工期，也不影响其紧后工作的正常进行
B.
不影响总工期，但将其紧后工作的开始时间推迟5天
C.
将其紧后工作的开始时间推迟5天，并使总工期延长3天
D.
将其紧后工作的开始时间推迟3天，并使总工期延长1天
当计算工期大于要求工期，可以在不改变网络计划中各项工作之间的逻辑关系的前提下，通过压缩关键工作的持续时间来满足要求工期。选择应缩短持续时间的关键工作时，应考虑下列因素（ ）。
A.
缩短持续时间对质量和安全影响不大的工作
B.
有充足备用资源的工作
C.
缩短持续时间所需增加费用最小的工作
D.
选择关键工作并压缩其持续时间时，应选择优选系数最大的关键工作
下列关于竖曲线测设，说法不正确的是
A.
竖曲线起点里程=变坡点里程-切线长
B.
竖曲线终点里程=变坡点里程+切线长
C.
坡度线高程是根据竖曲线两端的坡度值、变坡点高程以及曲线加密点间距计算得到的。
D.
竖曲线加密点设计高程=坡度线高程 - 竖曲线切线与曲线高差
某企业按应收账款余额百分比法计提坏账准备,年末应收账款余额为160000元,坏账准备提取比率为1%,计提坏账准备前,“坏账准备”科目有借方余额400元,该企业当年应计提的坏账准备金额为( )元。
A.
400
B.
1200
C.
1600
D.
2000
某企业按应收账款余额百分比法计提坏账准备,年末应收账款余额为640,000元,坏账准备提取比率为1%,计提坏账准备前,“坏账准备”科目有贷方余额1600元。该企业当年计提坏账准备后,应收账款的账面价值为( )元。
A.
640,000
B.
638,400
C.
635,200
D.
633,600
企业本月月初库存材料的计划成本为50000元,材料成本差异为借方1000元;本月购进原材料的计划成本为300000元,实际成本为292000元。该企业本月的材料成本差异率为()
A.
超支2%
B.
节约2%
C.
超支3%
D.
节约3%
企业对有关以公允价值计量且其变动计入当期损益的金融资产的下列交易或事项进行会计处理时,会涉及“投资收益”科目的有( )。
A.
取得投资时支付的交易费用
B.
取得投资时支付的价款中包含的现金股利
C.
持有期间获得的现金股利
D.
持有期间发生的公允价值变动损益
设图G有6结点，若个结点的度数分别为：1，4，4，3，5，5，则G共有__条边。
某企业20×9年6月28日自行建造的一条生产线投入使用,该生产线的建造成本为370万元,预计使用年限为5年,预计净残值为10万元,采用年数总和法计提折旧,20×9年12月31日该生产线的可收回金额为300万元,20×9年该生产线应计提的减值准备为()万元。
A.
50
B.
70
C.
10
D.
60
钛渣的生产原料主要有__,__等。
硫酸法生产钛白粉，钛液水解过程大致分为__,__,__,三个阶段。
硫酸高铁在酸性溶液中是不稳定的，在pH=2.5时就开始水解生成碱式硫酸盐或氢氧化物沉淀，在钛液水解时它们一道沉淀到偏钛酸中无法通过水洗除去，在煅烧时又变成氧化铁使钛白粉变色、白度下降，严重影响成品的质量。
A.
正确
B.
错误
The novel coronavirus is insensitive to which of the following disinfectants? ( )
A.
Diethyl ether
B.
75% alcohol
C.
Hypochlorous acid
D.
Peracetic acid
E.
Chlorhexidine
Which of the following viruses has the largest genome in RNA viruses? ( )
A.
Influenza virus
B.
Measles virus
C.
Adenovirus
D.
Respiratory syncytial virus
E.
Novel coronavirus
Traditional vaccines include ()
A.
Live attenuated vaccine
B.
Subunit vaccine
C.
Inactivated vaccine
D.
Genetic engineering vaccine
E.
Nucleic acid vaccine
The novel coronavirus binds to the host cell through the envelope protein. ( )
A.
正确
B.
错误
Which of the following is not true regarding the clinical manifestations of COVID-19? ()
A.
Fever
B.
Dry cough
C.
Fatigue
D.
Dyspnea can occur in severely ill patients
E.
Most of the patients are accompanied by symptoms such as nasal congestion, runny nose, sore throat and diarrhea
COVID-19 was officially named by the world health organization on February 11, 2020 as Coronavirus Disease 2019 (COVID-19). ( )
A.
正确
B.
错误
Which one of the following is incorrect regarding the clinical history of novel coronavirus infection? ()
A.
Relative symptoms are severe in children cases
B.
Mild cases may be free of pneumonia
C.
Most patients have a good prognosis
D.
A few patients are in critical condition
E.
The elderly and those with chronic basic diseases have poor prognosis
For the general treatment of COVID-19, which of the following is incorrect? ()
A.
Supportive treatment
B.
Symptomatic treatment
C.
Oxygen therapy
D.
Antibacterial treatment
E.
Antiviral therapy
For the treatment principles of severe and critical cases of COVID-19, which of the following are correct? ( )
A.
Based on symptomatic treatment
B.
Active prevention of complications
C.
Treatment of underlying diseases
D.
Prevent secondary infection
E.
Timely organ support
In epidemiology of infectious diseases, incubation period refers to ().
A.
Time interval from pathogens invading human body to the earliest onset of clinical symptoms
B.
Recessive infection stage
C.
From invasion of human body to disappearance of clinical symptoms
D.
The first clinical symptoms onset in human body until the clinical symptoms disappear
E.
Asymptomatic infection stage
The sources of infection of COVID-19 are ().
A.
patients infected with novel coronavirus
B.
bat carrying novel coronavirus
C.
Asymptomatic infection
D.
Wildlife
E.
poultry
The three types of airborne transmission refer to ().
A.
droplet transmission
B.
aerosol transmission
C.
dust
D.
particles
E.
spores
The epidemic characteristics of airborne infectious diseases are ().
A.
high incidence in winter and spring
B.
periodical increase incidence of the disease in unimmunized population
C.
easy route of transmission, far and wide transmission
D.
influence by living conditions and population density
E.
all above
The crowd susceptibility refers to ()
A.
Group resistance
B.
Population immunity
C.
Proportion of immunized population
D.
The immunity of the population as a whole to pathogens of infectious diseases
E.
The susceptibility of the population as a whole to pathogens of infectious diseases 多选题
The prevention and control strategybased on the three links of the epidemic process of infectious diseases include ().
A.
Control sources of infection
B.
Interrupt the route of transmission
C.
Kill wild animals
D.
Protect the susceptible population
E.
Environmental disinfection 判断题
If there is a suspected case of COVID-19 in an aircraft equipped with hepa filter, the close contacts are ( ).
A.
Passengers in the same row as the case seat in the cabin
B.
Passengers with seats in three rows, front and rear
C.
Cabin crew providing cabin services in the area where the case occurred
D.
Family members who traveled with the case and ate together
E.
Talk to other passengers who wear masks and add WeChat when waiting for the flight
Route of transmission refers to the transmission or spread of an infectious agent through the environment or to another person. ()
A.
正确
B.
错误
In the following cases, ( ) is only applicable to the detection range of new coronavirus pneumonia cases in Hubei Province.
A.
Suspected cases
B.
Confirmed cases
C.
Clinically diagnosed cases
D.
Asymptomatic people
E.
Cluster epidemic
Disease surveillance is an important part of the prevention and control of diseases, and it is the basis for formulating disease prevention and control strategies, it’s purposes include ( ).
A.
Understand the current status of population diseases and identify major public health issues
B.
Find abnormal conditions, find out the reasons, and take intervention measures
C.
Identify high-risk groups, predict disease prevalence, and estimate health service needs
D.
Evaluate the effects of interventions and formulate scientific and effective public health strategies and measures
E.
Assess the reserves of vaccines and protective materials
"Technical Guidelines for the Selection and Use of Masks for the Prevention of New Coronavirus Infections" divides the population and scenes into ( ) grades according to the risk of different populati...
A.
Two
B.
Three
C.
Four
D.
Five
E.
Six
The psychological performance of the COVID-19 suspected patient includes. ( )
A.
Uncertainly
B.
Anxiety
C.
Fluke
D.
Loneliness
E.
Discriminated
The focus of psychological intervention for patients with dependent personality is ( )
A.
Reduce the chance of being implied, maintain authority, and promote calmness
B.
Improve patient confidence, affirm their value, establish a good doctor-patient relationship, listen carefully and pay attention to patients
C.
Fully understand and accept patients, avoid arguments
D.
Inquire actively and respect the patient
E.
Provide appropriate information, establish trusting relationships
What are the areas of progressive relaxation ( )
A.
Upper limb
B.
Head
C.
Torso
D.
Lower limbs
E.
Environment Reference
The step of imagine relaxation exercises include. ( )
A.
Mobilize the external senses
B.
Establish an inner safety island
C.
Soothing natural situation
D.
Save the sense of relaxation
E.
Must lie down
The psychological performances of the helper include. ( )
A.
Emotional dullness
B.
Difficult to make decision
C.
Decreased sense of security
D.
Reduce communication
E.
Loss of trust
Stress mediators include. ( )
A.
Depress mood
B.
Cognitive evaluation
C.
Personality traits
D.
Social support
E.
Life events
The rest and recovery part of the donor includes ( )
A.
Talk to someone your trust about helping others
B.
Recognize your success, even in small areas
C.
Learn to introspect and recognize the restrictions
D.
Continuous work without rest
E.
Adequate rest
Instagram is an example of a(n):
A.
interest-based social network.
B.
affinity community/social network.
C.
general community/social network.
D.
practice network.
All of the following are examples of direct goods in the auto industry except:
A.
sheet steel.
B.
shatter-resistant glass.
C.
rubber molding.
D.
desktop computers.
MAX7000A的宏单元包括与阵列、乘积项选择阵列以及由一个或门、 一个异或门、一个触发器和4个多路选择器构成的OLMC。不难看出，每一个宏单元就相当于一片（）。
A.
PROM
B.
GAL
C.
pal
D.
pla
E.
一般
Intercultural competence means the ability to become effective and appropriate in interacting across cultures.
A.
正确
B.
错误
Along an indifference curve that bows inward, the marginal rate of substitution of a good ( )
A.
rises as the quantity of the good rises.
B.
decreases as the quantity of the good rises.
C.
remains the same as the quantity of the good rises.
D.
rises as the quantity of the good falls.
相关题目：
【多选题】可提高光固化复合树脂固化深度的措施是
A.
采用波长与复合树脂光敏引发剂匹配的光固化灯
B.
延长固化灯照射时间
C.
采用高光强光固化灯
D.
采用软启动光固化灯
E.
采用低光强光固化灯
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