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【简答题】
平面一般平衡的必要与充分条件是:。
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参考答案:
举一反三
【单选题】Why did Penny want to lose weight?
A.
She wanted to have a baby.
B.
She'd had two children and gained weight.
C.
Her children kept telling she was fat.
D.
Her children don't like her.
【单选题】Why did Jim lose his previous job?
A.
There were problems with punctuality.
B.
There were disagreements with management.
C.
The company was bought by another company.
【单选题】根据各齿轮的轴线相对机架是否固定,可把轮系分为( )大类。
A.
2
B.
3
C.
4
D.
5
【单选题】Contrary to the opinion of the public, the chairman decided to appoint _______ he thought was equal to the job.
A.
who
B.
whomever
C.
whom
D.
whoever
【判断题】S仅能硫化不饱和橡胶;DCP能硫化饱和、不饱和橡胶。
A.
正确
B.
错误
【简答题】轨面不平顺,将使列车()产生共振,造成列车与轨道振动及行车噪声的产生,影响列车的平稳和舒适。
【多选题】数控机床进给系统的指标包括
A.
切削进给速度范围
B.
快速移动速度范围
C.
滚珠丝杠的精度
D.
定位和重复定位精度
E.
最小分辨率
【多选题】数控机床进给系统的指标包括( )
A.
最小分辨率
B.
快速移动速度范围
C.
滚珠丝杠的精度
D.
定位和重复定位精度
E.
切削进给速度范围
【判断题】S仅能硫化不饱和橡胶;DCP能硫化饱和、不饱和橡胶。
A.
正确
B.
错误
【简答题】请您出示贷款申请。 Please present a 。
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