现场急救中与胸外心脏按压同时进行的是()。
A、口对口吹气法
B、仰卧压胸法
C、俯卧压背法
D、心前区叩击
参考答案:A
A.(A) Medical insurance and retirement funds.
B.(B) Unpaid overtime compensations and unsettled debts.
C.(C) Replacement for your post and a raise of your salary.
D.(D) Fringe benefits and family allowance.
A.电流表的示数为3/11 A
B.通过灯泡的电流的频率为50Hz
C.电流表的示数为3/22 A
D.理想变压器原、副线圈匝数之比为2:1