拉接电力线要注意次序，接电时，要（）；断电时，要首先切断电源。
A.从开关接向机具
B.从电源接向机具
C.从机具接向电源
D.从机具接向开关
参考答案：C
The policeman stop him when he was driving home and ________him of speeding.[ ]
A. charged
B. accused
C. warned
D. blamed
伤寒并发症发生时可出现的临床表现（）
A.白细胞数增高
B.压正常者可能降低
C.脉率增快，相对缓脉消失
D.肥达反应"O"及"H"效价增高
E.稽留热型有变动或骤降
stop him when he was driving home and ________him of speeding.[ ]