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【判断题】
齿轮传动的主要失效形式是磨损。A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】—-I’m very sorry. I haven’t brought you the pen you lent me yesterday. —-Forget it. You not return it to me as I have got an extra one.
A.
must
B.
need
C.
can
D.
should
【单选题】I don’t know the reason _____you were absent from the meeting, but I am sure that someone will tell me the reason____you haven’t told me.
A.
that; why
B.
because; which
C.
why; that
D.
of which; that
【简答题】I don’t know the reason _____ you were absent from the meeting, but I am sure that someone will tell me the reason _____ you haven’t told me. (5.0分)A. why; that B. that; why C. because; which D. of...
【多选题】关于再生段跟踪标识失配（TIM）告警，下面哪些描述是正确的：（）。
A.
使用J0字节重复地发送段接入点标识符，收端能据此确认其与指定发送端处于持续连接状态。
B.
在同一个运营者的网络内该字节可为任意字符。
C.
在不同两个运营者的网络边界处要使设备收、发两端的J0字节相同——匹配。
D.
通过J0字节可使运营者提前发现和解决故障，缩短网络恢复时间。
【单选题】I don’t know the reason _____you were absent from the meeting, but I am sure that someone will tell me the reason____you haven’t told me.
A.
why; that
B.
that; why
C.
because; which
D.
of which; that
【单选题】I haven’t seen you for ages. Can you tell me ____?
A.
where have you gone
B.
where you have gone
C.
where have you been
D.
where you have been
【单选题】Which of the following is the closest in meaning to 'discipline' in PARAGRAPH 2? 查看材料
A.
Subject.
B.
Lesson.
C.
Punishment.
D.
Regulation.
【简答题】种群的自然选择类型有 、 和 三种。
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