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【单选题】
一个电流表的满偏电流Ig=1mA,内阻Rg=500Ω。要把它改装成一个量程为10V的电压表,则应在电流表上( )A.
串联一个10kΩ的电阻
B.
并联一个10kΩ的电阻
C.
串联一个9.5kΩ的电阻
D.
并联一个9.5kΩ的电阻
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【单选题】Don’t worry about me. I’m old enough to think for __________.
A.
himself
B.
herself
C.
yourself
D.
myself
【简答题】I’m afraid to grow old—we’re all afraid. In fact, the fear of growing old is so great that every aged person is an insult and a threat to the society. They remind us of our own death, that our body wo...
【单选题】某个人进行100米比赛时,假设平均步长2米平均步频4步/秒则他用了()。 100/2=50 50/4=12、5
A.
12″40
B.
12″45
C.
12″50
D.
12″60
【简答题】Hello! I’m a girl from Canada. My name is Andy. I’m thir years old. I’m glad to be a student in Class Two, Grade Seven. I hope we’ll be friends. If you want to call me, please remember 010-23789. ...
【简答题】This is my world now; it’s all I have left. You see, I’m old. And, I’m not as healthy as I used to be. I’m not necessarily happy with it, but I accept it. Occasionally, a member of my family will stop...
【单选题】I’m old enough to wash ____ clothes by myself. You can wash _____.
A.
my, your
B.
mine, yours
C.
my, yours
D.
your, my
【单选题】某个人进行 100 米比赛时,假设平均步长 2 米平均步频 4 步 / 秒则用了( C )。 A 、 12 ′′ 40 B 、 12 ′′ 45 C 、 12 ′′ 50 D 、 12 ′′ 60
A.
12 ″ 40
B.
12 ″ 45
C.
12 ″ 50
D.
12 ″ 60
【单选题】Mom, I’m old enough to wash ________ own clothes and ________. You can have a rest after work.
A.
my; your
B.
my; yours
C.
your; my
D.
yours; mine
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