急性病毒性肝炎病程一般为
A．＜2个月
B．2～4个月
C．＜5个月
D．＜6个月
E．＞6个月
参考答案：B
A crew member is having an epileptic convulsion. You should（）.
A.give the victim artificial respiration
B.completely restrain the victim
C.give the victim one 30 mg tablet of phenobarbital
D.keep the victim from injuring him or herself
在金属货币制度下，( )可以自由铸造。
A．存款货币
B．本位货币
C．基础货币
D．电子货币
