以下属于封闭母线安装内容的有()。
A.本体安装
B.传动装置配装
C.导体焊接
D.外壳焊接
E.电气试验
参考答案:C, D, E
Games, often seen as ____ activity for children, are still important in ____development of teenagers. [ ]
A. the: the
B. an; the
C. an; /
D. the; /
破伤风患者最早出现的临床表现是()。
A.牙关紧闭
B.大汗淋漓
C.角弓反张
D.阵发性抽搐
E.面部苦笑