液压支架顶粱的周检内容包括（）。A.进行日检的各项检查内容，处理日检处理不了的问题

发布时间：2019-09-09 04:16 │ 来源：www.tikuol.com

题型：多项选择题

问题：

液压支架顶粱的周检内容包括（）。

A.进行日检的各项检查内容，处理日检处理不了的问题

B.检查顶粱与前粱的连接销、轴及耳座，如发现有裂纹或损坏，应及时更换

C.检查顶粱与掩护梁的连接有无裂纹，如出现裂纹，要及时更换

D.检查顶梁有无塑性变形或局部损坏，如出现损坏，要及时更换

E.查检各种液压阀

考点：液压支架(柱)修理工液压支架（柱）修理工技能竞赛液压支架（柱）修理工技能竞赛题库

题型：多项选择题

阅读理解。

Mary is an American girl. She is now in Beijing with her parents. Mary doesn't know much Chinese, but
she is studying it. She often speaks Chinese with her Chinese friends. Sometimes they can't understand her,
because she can't speak Chinese very well.
It's Saturday morning. She goes out. She is walking in the street. She wants to go to the zoo to see the
elephants and monkeys, but she doesn't know how to get there. She asks a Chinese boy the way. The boy
can't understand her. Then she takes out a pen and a piece of paper. She draws an elephant on it, and
shows the picture to the boy. The boy understands, and shows her the way to the zoo.

1. Mary is ______.

[ ]

A. Chinese
B. English
C. Japanese
D. American

2. Mary is in ______ with her parents now.

[ ]

A. Shanghai
B. Beijing
C. New York
D. London

3. Mary doesn't know how to get to ______.

[ ]

A. the zoo
B. the park
C. her home
D. her school

4. Mary can't speak ______ very well.

[ ]

A. English
B. England
C. China
D. Chinese

5. At last The boy ______.

[ ]

A. can understand Mary'ｓChinese
B. takes her to the zoo
C. shows her the way to the zoo
D. draws a picture for Mary, too

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据报道，一辆横穿铁路的拖拉机，因故障而停在铁道上，此时从远处驶来一列火车，尽管司机及时采取紧急制动措施，但是缓慢行驶的列车还是将拖拉机撞“飞”了．这是因为火车的[ ]

A．动能很大

B．速度很大

C．势能很大

D．功率很大

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题型：多项选择题

患儿男，7岁。左膝部碰伤后6天开始持续高热寒战，患肢活动受限。左胫骨上端剧痛，且有深压痛。血白细胞21×109/L，中性粒细胞90%。X线片正常。可能是

A．左膝化脓性关节炎

B．急性血源性骨髓炎

C．急性蜂窝织炎

D．膝关节结核

E．创伤性关节炎

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题型：多项选择题

经过评估之后，针对建筑的总体评估结果，需要采取一定风险控制措施，将建筑的火灾风险控制在所接受的风险水平以下。常用的风险控制措施包括风险消除、风险减少、风险转移等。

不在可燃物附近燃放烟花、电焊作业时清除附近的可燃物属于（）。

A.风险消除

B.风险减少

C.风险转移

D.风险控制

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题型：多项选择题

无效合同，是指已经订立，但因（）的生效条件而不发生法律效力，不具有法律约束力的合同。

A、没有经过公正的合同

B、违反法律

C、私自订立

D、违反行政法规

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