电磁打点计时器[ ]
A、是一种计时仪器
B、使用直流电源
C、由交流电源供电,工作电压为220V
D、通电前,先把纸带穿过限位孔,再将纸带压在复写纸片的上面
答案:A
---- What did Father ask Lily yesterday?
---- Father asked her_______________.
A.did she pass the exam
B.when did she pass the exam
C.whether she had passed the exam
D.how she has passed the exam
暖风器疏水泵运行的要求?