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【简答题】
基尔霍夫电流定律 (KCL) 可表述为:电路任一节点,在任一时刻流入该节点的 _________ 为零。基尔霍夫电压定律 (KVL) 可表述为:电路中任一回路,在任一时刻,沿回路的 _________ 为零。
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【单选题】Was it in this palace( 宫殿 )___ the last emperor( 皇帝 ) died? prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
that
B.
in which
C.
in where
D.
which
【简答题】Write a notice for the Office of Peking University to inform. the teachers，workers and some students of a meeting to commend the advanced teachers and workers．Do not sign your own name at the end of t...
【简答题】A Recruitment Notice 招募通知 You are supposed to write for the Postgraduates Association a notice to recruit volunteers for an international conference on globalization. The notice should include the bas...
【简答题】You are supposed to write for the postgraduate association a notice to recruit volunteers for an international conference on globalization, you should include the basic qualification of applicant and ...
【简答题】Part A Write a notice. Your class is going camping. Write a notice with a list of Dos and Don'ts. Think of the following things: where to put up your tents/shade/washing up/bathing/lighting fires/cook...
【简答题】You are supposed to write for the Postgraduates Association a notice to recruit volunteers for an international conference on globalization. The notice should include the basic qualification of applic...
【单选题】The combining form meaning the skin is ___.
A.
dem/o-
B.
derm/o-
C.
dermat/o-
D.
both B and C
【简答题】You are supposed to write for the Youth Volunteers Association a notice to recruit volunteers for its Summer Teaching Program. The notice should include the basic qualifications for applicants and oth...
【单选题】下列哪个选项不是地球臭氧层减少会带来的些危害?
A.
地球发生大面积地震、山洪
B.
对人类健康危害严重，可引发和加剧眼部疾病、皮肤癌、传染疾病
C.
对水生生态系统产生影响，使浮游生物受到危害，导致海洋食物链中基础食物数量减少，使生活在浅水里的鱼类和贝类很难生存
D.
使人工高分子或天然高分子材料加速老化，如建筑物、喷涂、包装等物质老化，使其变硬、变脆、缩短使用寿命，并能使接近地面的有害臭氧浓度增加，尤其在人口密集的城市中心，可引起光化学烟雾污染
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