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【单选题】
下列哪种收缩不做机械功?
A.
向心收缩
B.
离心收缩
C.
等动收缩
D.
等长收缩
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参考答案:
举一反三
【判断题】基准不重合误差是夹具制造误差、机床误差和调整误差等综合产生的误差。
A.
正确
B.
错误
【判断题】基准不重合误差是由夹具制造误差、机床误差和调整误差等综合作用下产生的误差。
A.
正确
B.
错误
【单选题】Older workers are generally as fit for work as younger workers.
A.
Right
B.
Wrong
C.
Not mentioned
【判断题】基准不重合误差是夹具制造误差,机床误差和调整误差等综合产生的误差。 (N)
A.
正确
B.
错误
【单选题】What's the workers' reaction to Taylor's innovation?
A.
Workers complained they could not create because of the innovation.
B.
Workers complained that Taylor carried out his policy without sympathy.
C.
Workers complained that Taylor should tell them the ' stress' resulted from the innovation.
D.
Workers complained that Taylor's focus on process stripped their jobs of creativity and pride.
【简答题】A.Old workers. B.Old women and service men. C.Office workers. D.Manual workers.
【单选题】在OSI七层协议中,( )主要负责确保数据可靠,顺序,无错的从A点传输到B点
A.
数据链路层
B.
网络层
C.
传输层
D.
会话层
【简答题】SOCIAL WORKERS Social workers help people overcome problems and make their lives better.If people are homeless, sick, or having family problems, social workers will work with them.If students have tro...
【判断题】____基准不重复误差是夹具制造误差、机床误差和调整误差等综合产生的误差。
A.
正确
B.
错误
【单选题】在OSI 七层协议中,()主要负责确保数据可靠,顺序,无错地从A 点传输到B 点。
A.
数据链路层
B.
网络层
C.
传输层
D.
会话层
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