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【单选题】
下列关于曲轴箱强制通风系统叙述 错误 的是( )。A.
将进入曲轴箱的气体导入进气歧管，使其重新燃烧
B.
发动机不工作时： PCV 阀关闭曲轴箱与进气管的通路
C.
当发动机发生回火时，火焰的压力压紧 PCV 阀使其关闭，以防止火焰传到曲轴箱中
D.
发动机在大负荷时的 PCV 阀开度小于发动机在中小负荷的情况
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举一反三
【单选题】According to the article，to get customer information is considered to be
A.
an effective marketing method．
B.
easier if the company adopts a customer—driven business model．
C.
an impossible task to accomplish by many companies．
D.
difficult for a company with an integrated view of customers．
【简答题】分析如下图所示组合逻辑电路,试说明该电路的逻辑功能。(需列出真值表与逻辑代数表达式)
【单选题】Where can Jack Ma get the tender document?
A.
The bureau.
B.
The office.
C.
The agency.
D.
Working place.
【多选题】下列关于无节奏流水施工,正确的是( )。
A.
流水节拍是一个常数
B.
各个施工过程之间的流水步距不完全相等
C.
各个施工段之间的流水节拍不完全相等且差异较大
D.
施工段之间没有空闲时间
E.
施工班组数等于施工过程数
【单选题】According to the article, to get customer information is considered to be
A.
an effective marketing method.
B.
easier if the company adopts a customer-driven business model.
C.
an impossible task to accomplish by many companies.
D.
difficult for a company writer an integrated view of customers.
【单选题】She couldn't _____ her words _____ by the students. [ ]
A.
get; understanding
B.
get; understood
C.
make; to understand
D.
make; understand
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