铁路混凝土施工中水泥宜选用硅酸盐水泥及()水泥,不宜选用早强水泥。

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问题:

铁路混凝土施工中水泥宜选用硅酸盐水泥及()水泥,不宜选用早强水泥。

考点:铁路客运值班员铁路基础知识、安全知识铁路基础知识、安全知识题库
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根据判断下列句子的正确(T)与错误(F)。

     Long long ago, there was a young man who made his living by making tofu. One day, the tofu was not

sold out. In order to keep the tofu fresh, he cut it into pieces and mixed some flavors (香料) in it. Then he

put it into a crock (瓦罐). Several days later, he opened the crock and found that the smell was terrible. But

he tasted a piece. To his surprise, the taste was nice. An idea came into his mind (脑海)-maybe the smelly

(臭的) tofu would be a kind of special food. As expected, the smelly tofu became popular with local people,

soon it was well-known all over the whole nation.

     Now smelly tofu is the most special food in Hunan. And it is recommended (推荐) to all the people around

the world.

( )1. Long long ago, there was a young man who made tofu for a living.

( )2. A few days later, the young man opened the crock and found the smell was good.

( )3. The young man didn't think that the smelly tofu would be a kind of special food.

( )4. Soon the smelly tofu became famous in the whole nation.

( )5. Although the smelly tofu smelt terrible, it tasted nice.

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离子交换树脂,按结构特征,分为()、()和等孔型三种。

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简述AIDP的临床表现。

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Chronometer error may be found by().

A.radio time signal

B.comparison with a timepiece of known error

C.applying the prevailing chronometer rate to previous readings

D.All of the above

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坑透前,机电、队组等应派有关人员对影响坑透精度的金属导体进行断开处理,并甩开()米左右。

A.10

B.20

C.30

D.40

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