在间接测量中,形成测量尺寸链的环节越多,不确定量的确定度就是()

A越准
B越大
C越小
D不变


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1.下列不属于尺寸的一般公差规定公差等级的是()

A精密级
B中等级
C粗糙级
D最细级

2.单项选择题They went to the street to ()to the whole city to help the poor boy.

A. apply
B. appeal
C. add
D. reply

3.国际工程承包合同按价格形式分为()。

A、总价合同
B、单价合同
C、成本加酬金合同
D、交钥匙合同
E、交产品合同
此题为多项选择题。

9.单项选择题 According to the new regulation, every employee shall be paid ________ their work so that productivity can be increased

A. in regard to
B. in reference to
C. in proportion to
D. in contrast to

10.单项选择题 Whenever I feel lonely or upset, I always do some reading, which ________ me well.

A. serves
B. suits
C. favors
D. motivates