提高天线的效率,应当尽可能()和降低损耗电阻。
A、提高辐射电流
B、降低辐射电流
C、提高辐射电阻
D、降低辐射电阻
参考答案:C
–Hurry, Mike! The bus is coming.
--Wait a minute,please! Let me see if there’s ______ left.
A.anything else
B.something important
C.nothing else
D.any other things