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【单选题】
切削力可分解为主切削力Fc、背Fp和进给力Ff,其中消耗功率最大的( )A.
进给力Ff
B.
背Fp
C.
主切削力Fc(C)主切削力Fc
D.
不确定
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反馈参考答案：
举一反三
【简答题】外汇汇率的标价方法有（ ）。
【简答题】外汇汇率的标价方法有（ ）。
【单选题】Which of the following are disadvantages of flexible budgets? 1 They are not very useful for decision-making 2 They are more time consuming to prepare than fixed budgets 3 They fail to provid...
A.
2 and 4 only
B.
2,3 and 4 only
C.
1,2 and 3 only
D.
1,3 and 4 only
【判断题】The students should make sure that they are qualified for a particular scholarship before making an application.
A.
正确
B.
错误
【单选题】Which of the following are disadvantages of flexible budgets? 1 They are not very useful for decision-making 2 They are more time consuming to prepare than fixed budgets 3 They fail to provid...
A.
2 and 4 only
B.
2,3 and 4 only
C.
1,3 and 4 only
D.
2 and 3 only
【单选题】What are they doing?
A.
Having an important meeting.
B.
Making an appointment(约会).
C.
Checking the time.
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