继电器单线圈或两线圈分别使用时,为得到与串联使用同样的工作安匝,则通过线圈的电流必须比串联使用时()。
A.小1/2
B.小1/3
C.大3倍
D.大2倍
参考答案:D
消化道中毒后洗胃,每次注入洗胃液量宜控制在()
A.500~600ml
B.500~1000ml
C.1500ml
D.800~1200ml
E.200~250ml
Why will the speaker make the call().
A.Because he will let the other person know about the assignment
B.Because he needs to talk to somebody.
C.Because he can’t talk about the assignment now.
D.Because he wants to know about the assignment.