测站在未接上天线时,多次发射信号很容易出现()。
A、烧坏电台
B、烧坏控制板
C、烧坏电池
D、都烧坏
参考答案:A
—Guess what? I have got A for my term paper.
—Great!You _______ read widely and put a lot of work into it.
A.must have
B.should
C.must
D.should have
联机分析处理的基本分析功能包括( )。 Ⅰ、聚类 Ⅱ、切片 Ⅲ、转轴 Ⅳ、切块
A.Ⅰ、Ⅱ和Ⅲ
B.Ⅰ、Ⅱ和Ⅳ
C.Ⅱ、Ⅲ和Ⅳ
D.都是