【单选题】
闭合燃油泵开关，RBC不吸合时，应检查___。
A. 16DZ
B. 3～4DZ
C. RBC线圈电路
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答案
C
解析
暂无解析
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【单选题】
由启动变速箱驱动的装置有：___。
A. 启动发电机、励磁机、测速发电机、后通风机
B. 启动发电机、励磁机、静液压泵、前通风机
C. 启动发电机、励磁机、测速发电机、前通风机
【单选题】
当机车浮沉振动时，油压减振器的鞲鞴与缸筒所形成的上、下油腔容积会发生变化，其中的工作油在流经心阀或进油阀上的节流空时由于___作用而衰减了机车的振动。
A. 润滑
B. 粘滞阻力
C. 密封
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【单选题】
Q2: When does the woman arrive back home by subway?___
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B. At 7 .
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D. At 5 .
【单选题】
Q3: According to the woman, in what way will the new high-speed train be a big help to her?___
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【单选题】
Q4: How will the new high-speed train affect the man?___
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【单选题】
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【单选题】
Q2: What is the present situation about Americans’ commuting to work?___
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【单选题】
Q3: Why does Steven choose to have an extreme commute?___
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【单选题】
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【单选题】
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【单选题】
Q3: What is special about Linda’s party?___
A. The party will last four hours .
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【单选题】
Q4: What will Katy do to solve her problem?___
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【单选题】
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【单选题】
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【单选题】
Q3: How many Black Friday shoppers were reported to go to the shops at midnight this year?___
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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D.
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
In the first two paragraphs of the passage the writer tries to tell us that___
A. he had lived in Washington D.C. for twenty years
B. he was very imaginative when he was a child
C. he had fond memories of his old neighborhood
D. )he had come from a very poor neighborhood
