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【简答题】
1) There are a lot of fans ____________ (hoped, hoping) for a glimpse of the movie star. 2) The tourist ____________ (looking at, looked at) the map is a relative of my father. 3) People ____________ (lived, living) in cities can enjoy more of modern life. 4) Here is a notice ____________ (warned, warning) people not to litter the beach. 5) Computers ____________ (imported, importing) from abroad are usually more expensive. 6) People ____________ (wishing, wished) to go on the tour have to book in advance. 7) Do you hear a man ____________ (talked with, talking with) your brother in the living room? 8) Those houses ____________ (pulled down, pulling down) were built thirty years ago. 9) The devices ____________ (using, used) by advertisers to gain people’s attention seem to be effective. 10) Most of the people ____________ (invited, inviting) to the reception are old friends of mine.
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参考答案:
举一反三
【单选题】神经细胞动作电位的去极相中,通透性最大的离子是
A.
K+
B.
Na+
C.
Cl-
D.
Ca2+
【单选题】It was with great delight that I read in your February _____ the letter to the Editor written by Prof. Johnson.
A.
issue
B.
printing
C.
magazine
D.
copy
【单选题】神经细胞动作电位的去极相中,通透性最大的离子是
A.
K+
B.
Na+
C.
Cl-
D.
Ca2+
E.
Mg2+
【单选题】It was with great delight that I read in your February _____ the letter to the Editor written by Prof. Johnson.
A.
issue
B.
item
C.
magazine
D.
copy
【判断题】随着主偏角的增大,散热条件变好,切削温度下降。
A.
正确
B.
错误
【多选题】异步串行数据通信有如下哪几种数据通路形式。
A.
单工
B.
双工
C.
半双工
D.
全双工
【判断题】随着主偏角的增大,散热条件变好,切削温度下降。
A.
正确
B.
错误
【单选题】晶体三极管是由两个PN结构成的一种半导体器件,这两个PN结分别称为( )。
A.
基结 集电结
B.
集电结 发射结
C.
基结 发射结
D.
PNP结 NPN结
【判断题】H型钢与普通工字钢相比,具有截面模数大、重量轻、节省金属等优点,可使建筑结构减轻80~90%。
A.
正确
B.
错误
【简答题】串行通信有哪几种数据通路形式?
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