施工机械司机工资属于( )。
A.直接人工费B.施工机械使用费C.企业管理费D.大型机械安拆费
参考答案:B
_________fit, we ought to learn more about our body and be careful with what we eat.
A.Keeping
B.To keep
C.Having kept.
D.To have kept
图9-1所示电路原已稳定,t=0时断开开关S,则为下列何值()。
A.78V
B.117V
C.135V
D.39V