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由于电磁波在良导体中的衰减很快，故在传播很短的一段距离后就几乎衰减完了。因此，良导体中的电磁波局限于导体表面附近的区域，这种现象称为[填空1]

【参考答案】

第1空:趋肤效应

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单项选择题
恒温时，B溶解于A中形成溶液，若纯B的摩尔体积大于溶液中B的偏摩尔体积，则增加压力将使B在A中溶解度如何变化（   ）
A．不变
B．增大
C．减小
D．不一定
单项选择题
"...She was married to an officer in India,long ago India;and she had a life of physical adventure(冒险)as exciting as her poetry.Her husband could cross rivers using crocodiles(鳄鱼)as stepping stones.He died when she was only 39.Unwilling to exist without him,she took her life,leaving a son in England."
I stared at the paper,21?reading,couldn′t help thinking.
Crocodiles are lazy animals as a rule,but they can move like lightening when they want to.And they don′t mind hurrying?22?they′re hungry.There used to be lots in Indian rivers,living on fish mostly;but what′s a little fish for a fifteen-foot crocodile？They ate people,fisherman or anyone else delicious enough to get too near;women doing the?23,or children playing at the water′s
24.A hungry crocodile′s mouth?25?over a meal with a sound like a gunshot.A big fellow can?26?in a man in two bites(咬)。
That woman′s husband crossed rivers?27?from one crocodile′s back to the next.I believe it.It had to be done quickly before the creature could see what was happening.It wasn′t28?a brave,active man;and no doubt he improved with practice.He could never look?29while crossing.
The wife used to watch him--I felt sure of that.She lived?30?the adventure,the?31?excitement of it all.Their real life was with tigers,snakes...It′s no wonder she wrote?32poetry.
Then he died.I imagined how she felt.Was there another man?33?him in India,in the world?She was still young,hardly a sitting-room widow(寡妇)."I must?34,too."she said to herself.So she did what she felt she had to do.A?35?probably,to her head.
But her young son,their son?Was her love for him nothing compared to her husband?Well,what do you think?
第25题答案是
A.looks
B.sends
C.shuts
D.turns
单项选择题
哪项不符合剧场内部的设计要求？( )
A.座席地坪高于前面横走道0.50m时应设栏杆
B.栏杆应坚固，其水平荷载不应小于1kN/m
C.楼座前排栏杆不应遮挡视线，实心部分不应高于0.40m
D.池座首排座位排距以外与乐池栏杆净距不小于1.00m
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