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【单选题】
有抗渗要求的混凝土工程，应优先选择（ ）水泥。A.
硅酸盐
B.
矿渣
C.
火山灰
D.
粉煤灰
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反馈参考答案：
举一反三
【单选题】分拣单元用于区分开白料、黑料、金属料的传感器是_______________。
A.
光纤传感器、金属传感器
B.
磁性开关、光电传感器
C.
光电编码器、磁性开关
D.
磁性开关、金属传感器
【单选题】— Come on, please give me some ideas about the project. — With so much work filling my mind, I almost ____. [ ]
A.
break up
B.
break out
C.
break down
D.
break off
【单选题】Please give me some ideas about the project. ---With so much work filling my mind, I almost ___.
A.
break up
B.
break out
C.
break down
D.
break off
【简答题】贵州省解放后,紧接着开展了大规模的()斗争
【单选题】—Come on, please give me some ideas about the project. —Sorry. With so much work _____ my mind, I almost break down. [ ]
A.
filling
B.
filled
C.
to fill
D.
being filled
【单选题】-- Come on, please give me some ideas about the project. -- sorry, with so much work _____ my mind, I almost break down.
A.
filled
B.
filling
C.
to fill
D.
being filled
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