青春期主要的自我意识矛盾是()
A.成长与发展
B.独立与依赖
C.精神与物质
D.幼稚与成熟
E.自主与服从
参考答案:B
— ________?
— A bank clerk.
A.Where does he work
B.What does he want to do
C.What does he want to be
D.How does he work
空气断路器相间分闸不同期应符合制造厂规定,制造厂无规定时,则相间合闸不同期不大于()。
A.3ms
B.4ms
C.5ms
D.6ms