提升管事故蒸汽的流量为5000Kg/h,采用0.98Mpa(绝)的饱和蒸汽,已知其P

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问题:

提升管事故蒸汽的流量为5000Kg/h,采用0.98Mpa(绝)的饱和蒸汽,已知其P/T1/2为0.4,计算流量孔板的孔径是多少?

考点:催化裂化装置操作工中级催化裂化装置操作工中级催化裂化装置操作工题库
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下列选项中,可以作为政府采购当事人中采购人的有()。

A.商务部

B.中国红十字会

C.财政部

D.个人独资企业

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One day Jack’s wife was cleaning out a closet(壁橱).

"Look at all these umbrellas," she said to Jack. "There are eight and they are all broken."

"I’ll take them to the umbrella shop and have them mended," Jack said.

Jack took the eight umbrellas to the shop and left them there. "They’ll be ready tomorrow," the shopkeeper said.

That evening Jack went home from the office by bus as usual. He sat next to an old woman. She had an umbrella on the floor near her.

When the bus reached his stop, he picked up her umbrella and stood up. "Hey!" the woman said. "That’s my umbrella !"

"I’m sorry," Jack said, and at the same time he gave the umbrella to her. "I wasn’t thinking. Please excuse me."

The next day he got back the umbrellas from the umbrella shop and got on the bus.

As he sat down, a voice behind him said, "You certainly have a successful day!"

He turned around and saw the woman whose umbrella had almost been taken by him the day before.

The next day Jack saw the woman ().

A.in the shop

B.at home

C.on the train

D.on the bus

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The child is _____ young to join the army.

A. so
B. too
C. enough
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你船在大风浪中锚泊,如果发现与上风的其他锚泊船舶的距离越来越近,最可能的情况时:()

A.本船已走锚

B.他船已走锚

C.两船均走锚

D.两船均处于正常锚泊中,风向发生变化

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保护的重点是身体要害部位和最易受伤的部位,首要的是()。

A.上肢

B.下肢

C.腰部

D.头颈部

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