改革开放之初,四大国有商业银行的分工明确,其中中国银行专门经营外汇业务并管理国家外汇。()
参考答案:对
----________ there any food for the drivers and passengers?
----Yes, __________.
A.Are; there are
B.Is; it is
C.Are; they are
D.Is; there is
()扳手适用于拆装位置狭小、特别隐蔽的螺母或螺栓。
A.开口
B.梅花
C.套筒
D.活动