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【简答题】
关于挖掘机的操作安全,以下说法正确的是: A. 可以在多机作业的情况下使用所有驾驶员都知道的信号,进行沟通,确保安全作业 B. 挖掘机行走时,不要让人员逗留在挖掘机的周围 C. 在斜坡上斜着横穿或改变方向有引起侧滑、翻车的危险,采取暂时下到平地上迂回等方法安 进行行走 D. 在上坡或下坡时,要把铲斗放在行走的方向,离地约0.2 至0.3 米
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【判断题】检修完毕,核对道岔位置时,联系用语必须规范,易于辩听,禁止用XX道岔开通直股或弯股等用语。
A.
正确
B.
错误
【单选题】So long as teachers fail to distinguish between teaching and learning, they will continue to undertake to do for children that which only children can do for themselves. Teaching children to read is n...
A.
it is one of the most difficult school courses
B.
students spend endless hours in reading
C.
reading tasks are assigned with little guidance
D.
too much time is spent in teaching about reading
【简答题】The man who hit so many people in a row had drunk so much that his mind could no longer distinguish ________ fantasy and reality.
【判断题】 自闭症儿童最主要的特征之一是社会交往障碍。
A.
正确
B.
错误
【单选题】Those twins are so alike that it is next to impossible to distinguish ______.
A.
who is who
B.
which is which
C.
one and the other
D.
one another
【单选题】“文革”给社会主义民主政治建设造成重大破坏,主要表现在 1人民代表大会多年没有召开 2各级领导机关无法正常工作3各种违宪违法行为不断 4社会极度混乱
A.
①②③
B.
②③④
C.
①②④
D.
①②③④
【单选题】composition的造词理据是()
A.
S(放置)
B.
C(聚集)
C.
P(木栓)
D.
A(角)
【单选题】So long as teachers fail to distinguish between teaching and learning, they will continue to undertake to do for children that which only children can do for themselves. Teaching children to read is n...
A.
it is one of the most difficult school courses
B.
students spend endless hours in reading
C.
reading tasks are assigned with little guidance
D.
too much time is spent in teaching about reading
【单选题】如图所示,波长为λ 的平行单色光垂直入射在折射率为 n 2 的薄膜上,经上下两个表面反射的两束光发生干涉。若薄膜厚度为 e ,而且 n 1 n 3 ,则两束反射光在相遇点的光程差为
A.
2 n 2 e
B.
n 2 e
C.
2 n 2 e + λ/2
D.
n 2 e + λ/2
【多选题】关于该框架梁配筋情况的描述,说法正确的有()。(案例多选题)见附图1-4
A.
第二跨左边支座上部非通长钢筋为2H25
B.
三个跨的截面尺寸均为350×750
C.
加密区箍筋的间距均为100
D.
箍筋是双肢箍
E.
左边第一跨梁下部纵向通长钢筋为4H16
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