DRRU261接口DRRU268/267接口提供()电源接口
A.220VAC
B.380VAC
C.-48VDC
D.48VDC
参考答案:A, C
In Britain,as far as I know,it is a________to give children chocolate eggs at Easter.[ ]
A. habit
B. tradition
C. procedure
D. manner
It was very ______ there when I spent Christmas Day in Australia last year. [ ]
A. hot
B. cold
C. warm