《电气装置安装工程蓄电池施工及验收规范》规定,蓄电池从出厂之日起到安装后的()时间超

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问题:

《电气装置安装工程蓄电池施工及验收规范》规定,蓄电池从出厂之日起到安装后的()时间超过六个月时,应采取充电措施。

考点:高校实验室安全考试电气电气题库
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四种粒子的结构示意图如图,相关说法正确的是

(  )

A.它们表示四种不同的元素

B.②对应元素在化合物中通常显+2价

C.①③④对应的原子电子数相同

D.①③表示的是阳离子

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.

第二节:短文改错(共10小题;每小题1.5分,满分15分)

Time is valuable but limit. There’s a famous saying,                 76.________

“Time is money”, this shows the importance of time. When         77.________

time has gone, it will never return back.                                78.________

It is a pity when many people make poor use of time. They       79.________

spend precious time sleeping, drinking and traveling.             80.________

They don’t realize wasting time is equal to waste part of their life.    81.________

They always regret having made a little achievement so far.       82._______

Therefore, we should form the habit of value time. Do not               83.________

put off what can be done today until tomorrow. Laziness           84.________

will not only bring us failure, but also lead us on the road         85.________

of poverty and even death.   

题型:填空题

长方体和正方体的体积都等于底面积乘高。[ ]

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修理尺寸法是修复配合副零件的,其修理级差值一般是()

A.0.2

B.0.25

C.0.35

D.0.3

题型:填空题

机动车在上坡途中可以掉头。

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