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【单选题】
螺纹升角增大，则连接的自锁性（）A.
提高
B.
不变
C.
降低
D.
可能提高，也可能降低
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【单选题】________ from the 11th floor when the policeman pointed his gun at him.
A.
Down jumped the murderer
B.
Down jumped he
C.
Down the murderer jumped
D.
Jumped down he
【单选题】Television video suggests that______.
A.
the policeman defended himself against the boys
B.
the policeman killed neither a boy nor a teenager
C.
two teenagers were scared by the policeman
D.
two teenagers did not threaten the policeman
【单选题】At the sight of the policeman _____from behind the door.
A.
did the boy rushed out
B.
rushing out was the boy
C.
out rushed the boy
D.
the boy was rushing out
【单选题】用万用表测量电阻的刻度下列说法正确的是(............)。
A.
刻度是线性的
B.
指针偏转到最右端时电阻为无穷大
C.
指针在最左端时电阻为无穷大
D.
以上说法都正确
【单选题】用万用表测量电阻的刻度,下列说法正确的是 :
A.
刻度是线性的
B.
指针偏转到最右端时，电阻为无穷大
C.
指针偏转到最左端时，电阻为无穷大
D.
指针偏转到中间时，电阻为无穷大
【单选题】用万用表测量电阻的刻度,下列说法正确的是
A.
刻度是线性的
B.
指针偏转到最右端时,电阻为无穷大
C.
指针偏转到最左端时,电阻为无穷大
D.
指针越靠右边测量精度越高
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