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【单选题】
起步发抖的原因是
A.
分离轴承套筒与导管油污、尘腻严重,使分离轴承不能回位 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
B.
从动盘或压盘翘曲变形,飞轮工作端面的端面圆跳动严重
C.
分离轴承缺少润滑剂,造成干磨或轴承损坏
D.
新换的摩擦片太从动盘正反装错
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举一反三
【简答题】听句子,选出恰当的答语。 (     )1. A. It's a music CD. (     )2. A. She is very busy. (     )3. A. It's very convenient. (     )4. A. Congratulations. (     )5. A. I'm sorry. B. It's Tom's. B. She likes to go sho...
【单选题】---Hello,is Tom there? ---______
A.
I am Tom.
B.
This is Tom speaking.
C.
Sorry,I'm very busy.
D.
Who arre you?
【单选题】听力原文:W: Tom, there is something wrong with my bike. Will you please fix it for me now? M: Sorry. I've got my hands full. Q: What's Tom's problem? (18)
A.
He has hurt his hand.
B.
He can't fix it.
C.
He is very busy at the moment.
D.
He wants the woman to pay the money.
【判断题】一台机器必须包含动力部分、传动部分、工作部分、操作或控制部分以及辅助部分。
A.
正确
B.
错误
【单选题】Sorry, Tom is busy cooking in the kitchen. Please________a minute.
A.
hang up
B.
hold 00
C.
hang around
D.
hold up
【判断题】一台机器必须包含动力部分、传动部分、工作部分、操作或控制部分以及辅助部分A. √ B. ×
A.
正确
B.
错误
【判断题】一台机器必须包含动力部分、传动部分、工作部分、操作或控制部分以及辅助部分
A.
正确
B.
错误
【单选题】Sorry, Tom is busy cooking in the kitchen. Please _______ a minute.
A.
hang up
B.
hold on
C.
hang around
D.
hold up
【单选题】听力原文:W: Tom, there is something wrong with my bike. Will you please fix it fox me now? M: Sorry. I've got my hands full. Q: What's Tom's problem? (15)
A.
He has hurt his hand.
B.
He can't fix it.
C.
He is very busy at the moment.
D.
He wants the woman to give him a hand.
【单选题】最后孤立向近中颊侧或舌侧倾斜的磨牙宜选用
A.
回力卡环
B.
对半卡环
C.
联合卡环
D.
杆形卡环
E.
圈形卡环
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