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【简答题】
简述天线辐射和接收电磁波的工作原理,其工作原理对天线的实际应用有哪些?
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【简答题】把一个高4cm的圆柱底面沿半径平均分成若干等份,然后把圆柱切开,拼成一个与它等底等高的近似长方体。长方体的表面积比圆柱的表面积增加了40cm2,原来圆柱的体积是( )cm3。 提示:增加的40cm2是哪些面的面积。 长方体的前面+后面=圆柱侧面积 长方体的上面+下面=圆柱2个底面积 长方体左面+右面=多出来的40cm3 长方体左面或右面一个面的面积=( )cm2 长方体的高=( )cm 长方...
【简答题】要设置隐藏共享，需要在共享名的后面加上（）。
【简答题】要设置隐藏共享,需要在共享名的后面加上____________符号。
【单选题】. ---Was the manager angry with you when he saw you playing computer games in offece hours? ---No, he was not angry at all ____ I was doing, but just said, “ Go back where you were.”
A.
what
B.
that
C.
which
D.
when
【单选题】—Why were you angry with Mike this morning? —Because he took my bike .
A.
by asking for permission
B.
without permission
C.
by telling me
D.
with permission
【简答题】已知一长方体的底面为正方形，它的前、后、左、右面的面积和为80平方厘米，又已知长方体的高是5厘米，则该长方体的体积是多少立方厘米？
【单选题】— You seemed to be angry with what he said. —Well，not exactly so. It was the way ____he spoke ____what he said that made me angry.
A.
that; other than
B.
/; rather than
C.
which; more than
D.
in which; together with
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