使用行灯要有良好的绝缘手柄和金属护罩,行灯的安全电压一般不得超过()
A.36V
B.220V
C.110V
参考答案:A
The employers often give the job to _______ they believe have work experience with a strong
sense of duty.
A.whoever
B.whomever
C.who
D.those who
具有镇惊安神、利尿通淋功效的药物是()。
A.朱砂
B.琥珀
C.龙骨
D.柏子仁
E.远志