用人单位享有()的权利。
A.随意用人
B.自主用人
C.择优用人
D.优先招用城镇户籍劳动者
参考答案:B
----- I had a really good weekend in the countryside.
----- ___________________________.
A.Oh, that’s very nice of you
B.Congratulations
C.It’s a pleasure.
D.Oh, I am glad to hear that.
一对渐开线直齿圆柱齿轮啮合时,同时啮合的齿对数最多为()。
A.1对
B.2对
C.3对