UPS不间断电源适用于中断供电时间为( )级的电力负荷。
A.min
B.mmin
C.s
D.ms
参考答案:D
劳动关系的产生是以劳动条件的( )为其条件。
A.合并
B.具备
C.分离
D.完整
He doesn’t have interest in cooking.__________, he’s getting tired of it.
A.On the contrary
B.On the one hand
C.On the other hand
D.On the whole