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【单选题】
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举一反三
【单选题】下列哪项不是视网膜中央动脉阻塞的典型表现
A.
视网膜动脉变细
B.
视力突然下降
C.
视乳头苍白
D.
视网膜出血
【单选题】通常情况下,硅和锗二极管的正向导通电压分别是()和()左右。
A.
0.7v;0.1v
B.
0.5v;0.1v
C.
0.7v;0.3v
D.
0.5v;0.3v
【单选题】用万用表的欧姆档检测较大容量电容器好坏时,若表笔搭接在电容器两端,指针迅速右偏,然后又回落至初始位置,则说明
A.
A电容器是好的
B.
B该电容内部断路
C.
C电介质已被击穿
D.
D该电容存在漏电现象
【简答题】A.She is a complete beginner. B.She is at the lower intermediate level. C.She is an upper-intermediate learner. D.She doesnt really know which level she is at.
【判断题】黑龙江省是北魏、辽、金、元及清政权的发源地。
A.
正确
B.
错误
【简答题】听短文,选择正确答案。 1. Where is Lily? A. She is at school gate. B. She is at the bookshop. C. She is in the library. 2. What is Lily going to do then? A. She is going home. B. She is going to catch a bus. C. ...
【单选题】—Han Mei _____ the exam, didn't she? —Sure, she is at the top of the class. [     ]
A.
failed
B.
passed
C.
fail
D.
pass
【单选题】二极管按照材料可分为硅锗,硅二极管的导通电压即正向压降是( )。
A.
0.2V
B.
0.3V
C.
0.5V
D.
0.7V
【单选题】“桃”被人们赋予隐逸的内涵是在下列哪首作品出现之后。
A.
《桃夭》
B.
《桃花源记》
C.
《题都城南庄》
【单选题】— Where is Kate? — Look, _____, she is at the school gate. [     ]
A.
there she is
B.
there is she
C.
here you are
D.
here it is
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