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【单选题】
设 是球面 的外侧, 为其法向量的,则积分 的值为( ) .A.
；
B.
；
C.
；
D.
.
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举一反三
【简答题】Every Divx disc has a special code so that the rental shop can identify which disc____________
【单选题】Rarely______so much attention from all around the world
A.
has drawn a discussion
B.
has a discussion drawn
C.
a discussion has been drawn
D.
has a discussion been drawn
【简答题】Which writer has naturalist tendency?A. Frank Norris. B. William Dean Howells. C. Theodore Dreiser. D. Both A and C.
【多选题】以下属于实施差别定价的商品的是()。
A.
全价的牙膏和打折的牙刷
B.
信用卡打折的衣服和现今全额支付的衣服
C.
不同时间段收费不同的通话服务
D.
学生火车篇和成人火车票
【单选题】As his disease has him, Hawking has to sit in his wheelchair and speak through a computer. [ ]
A.
disabled
B.
enabled
C.
disability
D.
enabled
【单选题】Though she has achieved great success, she has never felt ___ with it.
A.
proud
B.
content
C.
learned
D.
disappointed
【单选题】互感型传感器的工作原理是利用电磁感应中的互感现象，将被测位移量转换成线圈互感的变化，该类型的变压器又称之为（）
A.
差动变压器
B.
调压变压器
C.
电源变压器
D.
以上都不是
【单选题】The lady who has ______ for a night in the dead of the winter later turned out to be a distant relation of his.
A.
put him up
B.
put him out
C.
put him on
D.
put him in
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