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【简答题】
高处作业中,作业高度在h≥30m 以上时,称为_______________。
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【单选题】听力原文:M: I'm so tired that I can't see straight. W: You've been tired a lot lately, haven't you? M: Well, for the last few weeks, I've had to stay up most the nights to observe star configurations for ...
A.
Find his glasses.
B.
Sit up straight.
C.
Get enough rest.
D.
Change his tires.
【单选题】线路拨道,线路中心位移不得超过( )。
A.
± 10mm
B.
± 2 0 mm
C.
± 30 mm
D.
± 40 mm
【单选题】电气化铁路线路日常拨道,线路中心位移不得超过( )。
A.
±10mm
B.
±20mm
C.
±30mm
D.
±40mm
【单选题】--- Hi, Grandma, why do you look so tired? --- I’m tired. I _______ the cleaning all morning.
A.
did
B.
had done
C.
have been doing
D.
have done
【单选题】听力原文:M: What trouble are you having with your eyes? W: Well, I'm a bit tired and you know I do a lot of reading because of my work and besides our room is in the basement in the Department of English ...
A.
She has a lot of reading assignment.
B.
Her room is not well lit.
C.
The English Department is in a basement.
D.
She lives in a basement and works hard.
【单选题】下列因素中,可产生系统误差的是
A.
称量时未关天平门
B.
砝码稍有被侵蚀
C.
滴定管末端有气泡
D.
滴定管最后一位读数估计不准
【判断题】鱼的繁殖行为单一,鱼是卵生动物。
A.
正确
B.
错误
【单选题】--------You seem to show interest in cooking. -------------_________? On the contrary, I’m tired of it.
A.
Really
B.
Pardon
C.
OK
D.
What
【单选题】电气化铁路线路拨道,线路中心位移不得超过( )mm;一侧拨道量年度累计不得大于120mm,并不得侵入限界。
A.
± 15
B.
± 30
C.
± 45
D.
± 70
【多选题】下列选项中,关于简化包装所造成的效益背反现象描述正确的包括
A.
保管效率上升
B.
包装强度下降
C.
搬运效率下降
D.
破损率增多
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