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【单选题】

Three-phase transformer ratio refers to the ratio of ().

A.
Primary and secondary phase potentials
B.
Primary and secondary sideline potentials
C.
Primary and secondary sideline voltage
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参考答案:
举一反三

【单选题】The meaning of a power transformer model SFPL-63000/110 is ().

A.
The rated voltage of high voltage side is 63000kV, and the rated voltage of low voltage side is 110kV;
B.
The rated capacity of the high pressure side is 63000kVA, and the rated capacity of the low pressure side is 110kVA;
C.
Rated capacity 63000kVA, high voltage side rated voltage 110kV;
D.
The rated capacity is 63000kVA and the rated voltage on the low-voltage side is 110kV.

【多选题】耳部CT检查的适应证包括()

A.
先天性耳部畸形
B.
颞骨和耳部外伤
C.
耳部炎性疾病
D.
颞部及耳部肿瘤和瘤样病变

【单选题】The temperature reflected by the transformer thermometer is transformer ().

A.
The upper temperature
B.
The middle temperature
C.
The lower temperature
D.
Interturn temperature

【单选题】下列有关颞骨与耳部CT平扫检查技术的叙述,错误的是()

A.
横轴位扫描听眶下线垂直于床面
B.
扫描范围自岩锥上缘扫描至乳突尖部
C.
冠状位扫描应尽量使听眶下线平行于台面
D.
逐层扫描层厚1.0mm,层间距1.0mm
E.
容积扫描重建层厚0.7mm,层间距0.7mm

【多选题】有关耳部CT图像质量控制的叙述,正确的是()

A.
嘱患者去除金属饰品,检查时保持头部不动
B.
图像在满足诊断需求前提下尽量使用低kV、mAs扫描
C.
根据病变大小设定合适的层厚,保证图像的分辨率
D.
重建层厚薄,重建增量小,FOV小,可提高重组图像的空间分辨率
相关题目:
【单选题】The meaning of a power transformer model SFPL-63000/110 is ().
A.
The rated voltage of high voltage side is 63000kV, and the rated voltage of low voltage side is 110kV;
B.
The rated capacity of the high pressure side is 63000kVA, and the rated capacity of the low pressure side is 110kVA;
C.
Rated capacity 63000kVA, high voltage side rated voltage 110kV;
D.
The rated capacity is 63000kVA and the rated voltage on the low-voltage side is 110kV.
【多选题】耳部CT检查的适应证包括()
A.
先天性耳部畸形
B.
颞骨和耳部外伤
C.
耳部炎性疾病
D.
颞部及耳部肿瘤和瘤样病变
【单选题】The temperature reflected by the transformer thermometer is transformer ().
A.
The upper temperature
B.
The middle temperature
C.
The lower temperature
D.
Interturn temperature
【单选题】下列有关颞骨与耳部CT平扫检查技术的叙述,错误的是()
A.
横轴位扫描听眶下线垂直于床面
B.
扫描范围自岩锥上缘扫描至乳突尖部
C.
冠状位扫描应尽量使听眶下线平行于台面
D.
逐层扫描层厚1.0mm,层间距1.0mm
E.
容积扫描重建层厚0.7mm,层间距0.7mm
【多选题】有关耳部CT图像质量控制的叙述,正确的是()
A.
嘱患者去除金属饰品,检查时保持头部不动
B.
图像在满足诊断需求前提下尽量使用低kV、mAs扫描
C.
根据病变大小设定合适的层厚,保证图像的分辨率
D.
重建层厚薄,重建增量小,FOV小,可提高重组图像的空间分辨率
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