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【单选题】
在扫描电子显微镜中 , 下列二次电子像衬度最亮的区域是 ( ) 。A.
和电子束垂直的表面
B.
和电子束成 的表面
C.
和电子束成 的表面
D.
和电子束成 的表面
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举一反三
【单选题】Neither the prices nor the quality _______ .
A.
has changed
B.
have changed
C.
is changed
D.
are changed
【简答题】Neither the prices nor the quality __________(have)changed.
【简答题】Neither the quality nor the prices of the product _____________(have) changed.
【简答题】There is little snow this winter, _______?
【简答题】改错 只需要把错误的词写出,然后改成相应的正确的词。 Neither the quality nor the prices has changed.
【简答题】Neither the prices nor the quality______(specify)in the last contract.
【简答题】.判断对错并改正。 A good number of students speaks English quite well. The amount of today's sales are considerable. Quantities of food were on the table. I have no idea what her politics is . The singer and ...
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