当螺母和螺栓头周围的空间窄小,不能使用活扳手时,宜采用()A、起子 B、螺丝刀 C、呆扳

题型:单项选择题

问题:

当螺母和螺栓头周围的空间窄小,不能使用活扳手时,宜采用()

A、起子

B、螺丝刀

C、呆扳手

D、梅花扳手

考点:压力管道作业带压封堵带压封堵题库
题型:单项选择题

根据语境,填入适当的词语或句子,补全对话。

A: Hello, Mr Zhang!

B: Hello, Bob! You look worried and nervous.  _    1      ?

A: I have a big problem. _    2      .

B: What's your problem?

A:  You know I love basketball best.  But since I am in Grade Three,  my parents don't _   3      .

B: Maybe your parents are right.  Work must come first.

A: I see. But I      4      all my lessons. And I should be allowed to play basketball.

B: If I were you, I would have a talk with parents.

A: The problem is that they don't give a      5      .

B: OK! Let me talk it with your parents.

A: Thank you! Mr Zhang.

题型:单项选择题

预防食物被黄曲霉毒素污染,最根本的措施是()

A.防霉

B.去毒

C.防霉和去毒

D.以上都是

E.以上都不是

题型:单项选择题

卸车前,为使滚杠滑动灵活,可在斜坡道上抹些润滑剂,减少滚杠的阻力。

题型:单项选择题

在西部大开发进程中,贵州电力工业实施国家“西电东送”战略,主要以()为主。

A、黔电送湘

B、黔电送粤

C、黔电送桂

D、黔电送沪

题型:单项选择题

多系统器官功能衰竭,多数情况下,首先受累的器官是( )。

A.心
B.肝
C.肺
D.肾
E.脑

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