微孔管浮选是将空气通入孔径约为（）陶瓷管或塑料管，借助管上的细孔，将空气分散成细小的

发布时间：2018-09-30 12:40 │ 来源：www.tikuol.com

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微孔管浮选是将空气通入孔径约为（）陶瓷管或塑料管，借助管上的细孔，将空气分散成细小的气泡，均匀地进入浮选池中。

A.1—5μm

B.5—10μm

C.10—15μm

D.15—20μm

考点：油气田水处理工考试油气田水处理工技师考试油气田水处理工技师考试题库

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两个相邻自然数的和是97，这两个自然分别是多少？

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	阅读理解。

	Most people think of racing when they see greyhounds(灰狗) and believe they need lots of exercise. They can actually be quite lazy! Greyhounds are good at fast races but not long-distance run- ning. They do need regular exercise but they like to run for a short burst and then get back on the bed or a comfortable seat. Another misunderstanding is that greyhounds must be aggressive (好斗的) because they are big in size. In fact greyhounds love people and are gentle with children. Greyhounds can live for 12～14 years but usually only race for two or three years, and after that they make great pets. They don't need a lot of space,don't make a lot of noise,and don't eat a lot for their size. Normally, greyhounds can be as tall as 90cm. There is, however, a small-sized greyhound, which stands only 33cm. Greyhounds come in a variety of colors. Grey and yellowish-brown are the most common. Others include black, white, blue, red and brown or a mix of these. Greyhounds have smooth body coats ,low body fat and are very healthy. Because they're slim (苗条的)they don't have the leg problems like other dogs with the same height. But they do feel the cold ,especially since they would much rather be at home in bed than walking around outside.
	1. The text is written mainly ________.
	A. to tell people how to raise greyhounds B. to let people know more about greyhounds C. to explain why greyhounds are aggressive D. to describe greyhounds of different colors
	2. It can be inferred that greyhounds _______.
	A. love big dog houses B. like staying in bed all day C. make the best guard dogs D. need some exercise outdoors
	3. Why does the author say that greyhounds.make great pets7
	A. They are big in size. B. They live a very long life. C. They can run races for some time. D. They are quiet and easy to look after.
	4. If you keep a pet greyhound,it is important _______.
	A. to keep it slim B. to keep it warm C. to take special care of its legs D. to take it to animal doctors regularly

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假定以下跨境收支金额都在等值3000美元以下（含），哪些可以实行限额申报（）。

A、对私涉外支出款项

B、不涉及贸易出口收汇的对公涉外收入款项

C、非居民项下的对私涉外收入款项

D、居民个人收到的赡家款

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投资分析师执业行为操作规则包括______。

A．在作出投资建议和操作时，应注意适宜性

B．合理的分析和表述

C．信息披露

D．保存客户机密、资金以及证券

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读①②③三地气温与降水统计表，完成下列各题。

上表为上图中甲、乙、丙三地的气候资料，下列对应关系正确的是（）

A．甲—③；乙—②；丙—①

B．甲—②；乙—①；丙—③

C．甲—②；乙—③；丙—①

D．甲—③；乙—①；丙—②

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