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【简答题】
A) Most of her schoolmates are younger than she is. B) She simply has no idea what school to transfer in. C) She worries she won’t fit in as a transfer student D) There are too many activities for her to cope with. 13. A) Seek advice from senior students B) Pick up sone meaningful hobbies. C) Participate in after-school activities. D) Look into what the school offers. 14. A) Introduce her to her roommates B)Accept her as a transfer student. C)Find her accommodation on campus D) Give her help whenever she needs it. 15. A) She has interests similar to Mr. Lee's.. B) She has become friend with Catherines C) She has chosen the major Catherine has D) She has just transferred to the college.
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皮皮学刷刷变学霸
举一反三
【单选题】如图,已知直线AB、CD相交于点O,OE平分∠COB,若∠EOB=55
A.
35      
B.
55    
C.
70      
D.
110
【判断题】非公开发行股票,是指上市公司采用非公开方式,向非特定对象发行股票的行为。( )
A.
正确
B.
错误
【判断题】当pH值大于pI时,蛋白质带负电荷。
A.
正确
B.
错误
【简答题】蛋白质是两性电解质,当溶液的pH大于pI时,蛋白质带负电荷;pH小于pI时,则带正电荷;当溶液的pH等于pI时,蛋白质所带正负电荷相等,此时溶液的pH值称为该蛋白质的()。
【单选题】当蛋白质溶液pH值大于蛋白质等电(pI)点时,蛋白质会
A.
带负电
B.
带正电
C.
显中性
D.
可能带负电荷
E.
可能带正电荷
【单选题】当溶液的pH值大于蛋白质的pI时,蛋白质分子带有
A.
负电荷
B.
正电荷
C.
不带电荷
D.
以上都不对
【简答题】如下图所示,已知直线AB、CD相交于点O,OA平分∠EOC,∠EOD=110 °,则∠BOD=(    )。
【单选题】如图所示,已知直线 AB 、 CD 相交于点 O , OE 平分 ,若 ,则 的度数是
A.
B.
C.
【简答题】如图,已知直线AB、CD相交于点O,OE平分∠BOC,如果∠BOE=50°,那么∠AOC=______度.
【简答题】25℃时将半径为1mm的水滴分散成半径为10 -3 mm的小水滴,此时水的表面张力为72.8×10 -3 N·m -1 。问:比表面增加了多少倍?表面能增加了多少?完成该变化时,环境至少需要做功多少?
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