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【单选题】
光阻法检查不溶性微粒时,仪器测量粒度的直径范围应为( )μmA.
1~20
B.
1 ~30
C.
2~40
D.
2~50
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反馈参考答案：
举一反三
【单选题】The policeman warned the man ( ) after drinking.
A.
not to drive
B.
to drive
C.
driving
D.
not to driving
【单选题】The policeman warned the man ____after drinking.
A.
not to drive
B.
to drive
C.
driving
【单选题】The policeman warned the drive ________ so carelessly.
A.
never to drive
B.
to never drive
C.
to not drive
D.
doesn’t drive
【单选题】The policeman warned the robber ___ his knife.
A.
A, to take up
B.
B, to put down
C.
C, not to put down
D.
D, to wave
【单选题】The policeman warned the driver ______ so carelessly.
A.
never to drive
B.
to never drive
C.
to not drive
D.
didn’t drive
【单选题】The policeman warned the driver ________ so carelessly.
A.
never to drive
B.
to never drive
C.
to not drive
D.
doesn’t drive
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