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【单选题】
定积分 值的符号为( )A.
大于0
B.
小于0
C.
等于0
D.
不能确定
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反馈参考答案：
举一反三
【多选题】在质量改进活动中，下列提法不正确的是（ ）。
A.
质量改进侧重过程，质量突破侧重结果
B.
不提倡长期就一个题目开展活动
C.
质量改进可以分为“四个阶段，九步骤”
D.
质量改进就是一种质量突破
【单选题】______ Russian, Jack has to study a second foreign language.
A.
except
B.
however
C.
in addition to
D.
moreover
【单选题】He asked ______for the new mountain bicycle.
A.
did I pay how much
B.
how much I paid
C.
how much did I pay
D.
I paid how much
【简答题】I asked the p___ department for a report.
【单选题】I wasn't at home yesterday. I ____ to help with the harvest on the farm. [ ]
A.
asked
B.
was asked
C.
was asking
D.
had asked
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