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【单选题】
横扫千军：在攻防拆解3中，右掌刀切击的力点在（ ），须借蹬地产生的身体前冲力量。
A.
小指侧掌根部
B.
大拇指根部
C.
手掌外延
D.
拳掌根部
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参考答案：
举一反三
【单选题】第二篇 Pushbike Peril Low speed bicycle crashes can badly injure—or even kill—children if they fall onto the ends of the handlebars (车把). So a team of engineers is redesigning the humble h...
A.
it is not easy to persuade manufacturers to adopt the new design.
B.
the team of engineers has not found any countermeasures.
C.
children like to ride bicycles at a very low speed.
D.
a lot of children were killed in bicycle accidents in the past 30 years.
【单选题】(2005年)要用冲床在厚度为t的钢板上冲出一圆孔，则冲力大小( )。
A.
与圆孔直径的平方成正比
B.
与圆孔直径的平方根成正比
C.
与圆孔直径成正比
D.
与圆孔直径的三次方成正比
相关题目：
【单选题】第二篇 Pushbike Peril Low speed bicycle crashes can badly injure—or even kill—children if they fall onto the ends of the handlebars (车把). So a team of engineers is redesigning the humble h...
A.
it is not easy to persuade manufacturers to adopt the new design.
B.
the team of engineers has not found any countermeasures.
C.
children like to ride bicycles at a very low speed.
D.
a lot of children were killed in bicycle accidents in the past 30 years.
【单选题】(2005年)要用冲床在厚度为t的钢板上冲出一圆孔，则冲力大小( )。
A.
与圆孔直径的平方成正比
B.
与圆孔直径的平方根成正比
C.
与圆孔直径成正比
D.
与圆孔直径的三次方成正比
参考解析：
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