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【多选题】
剪力螺栓在破坏时,若栓杆细而连接板较厚时易发生( )破坏;若栓杆粗而连接板较,易发生( )破坏。A.
(A) 栓杆受弯破坏
B.
(B) 构件挤压破坏
C.
(C) 构件受拉破坏
D.
(D) 构件冲剪破坏
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【简答题】渡轮( ),出租车( ),美国( ),圣诞节( ),公寓( ),音乐会( )
【单选题】紫外/可见分光光度法定量分析通常选择物质的 （ ）处测定吸光度，然后用对照品或百分吸收系数求算出被测物质的含量，多用于制剂的含量测定。
A.
最小吸收波长
B.
最大吸收波长
C.
任一处波长
D.
不受波长限制
【简答题】Amy is an American student in Des Moines, Iowa. She is nine years old and she is in Grade Four this year. Now she and her friends are pen pals of the students in India. In their letters, Amy learns th...
【简答题】请用假名写出下列单词的发音: 1)半夜; 2)昨天晚上; 3)音乐会; 4)圣诞节; 5)暑假; 6)飞机; 7)出租车; 8)渡轮; 9)公寓; 10)游泳池; 11)朋友; 12)美国; 13)法国; 14)好像是; 15)笔直
【简答题】Des Moines国民银行.doc
【单选题】Which city had the lowest temperature?
A.
Des Moines.
B.
Flint.
C.
Fairbanks.
D.
Duluth.
【单选题】A confusing man whom you don’t know is standing, with a map in his hand , A B C on a street corner . No er...
A.
confusing
B.
whom
C.
in his hand
D.
on a street corner
E.
No error
【简答题】When I told my father that I was moving to Des Moines, Iowa, he told me about the only time he had been there. It was in the 1930s, when he was an editor if the literary magazine of Southern Methodist...
【单选题】一个电阻,接在10V的直流电源上,产生的功率为P。把它改接在正弦交流电源上,使其产生的功率为P/2,则正弦交流电源电压的最大值为( )
A.
7.07V
B.
5V
C.
14V
D.
10V
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