井下蓄电池充电室内必须采用矿用防爆型电气设各。测定电压时，可使用普通型电压表，但必须在揭开电池盖10min以后进行
参考答案：对
After the trainer was sure that the whale could look after itself, he __________it into the sea.
A．transported
B．unloaded
C．released
D．handled
酒精性肝病时升高最显著的是（）
A.ALT
B.ALP
C.AST
D.GGT
E.LDH
