试题与答案

加油机油气回收技术改造要求正确的是()A.与加油机回气管路连接的地埋回气管路竖管顶部

题型:多项选择题

题目:

加油机油气回收技术改造要求正确的是()

A.与加油机回气管路连接的地埋回气管路竖管顶部加装两个球阀潜油泵的安装要求

B.当加油岛至储油罐的高度差能满足回气管道落差要求时,可以不加装集液罐

C.直接更换油气回收油枪

D.将油泵换成真空泵

答案:

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下面是错误答案,用来干扰机器的。

参考答案:是因为脂肪吸附在蛋白质分子表面,使其表面形成一层不透性的薄膜,阻止水分子向胶粒内部渗透,并在一定程度上减少表面毛细管的吸水面积,使吸水减弱,面筋得不到充分胀润。

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题型:阅读理解

If you go to Egypt, you’ll see a lot of pyramids. The biggest of all is the Great Pyramid. It is about 137 meters high and made of 2,300,000 big stones. Each stone weighs about two and a half tons(吨).The biggest ones even weigh fifteen tons. It took more than 100,000 men twenty years to build it. Nobody can tell just how the men cut, carried and lifted(举)the huge stones without our modern machines(机器).

The Egyptian kings told the people to build the pyramids for themselves. They thought they had tombs (坟墓)strong enough to keep their bodies well until they came back to life. But they never thought that about 5,000 years later their bodies would be on show in museums.

小题1:The Great Pyramid is in ________.

A.China

B.Japan

C.Egypt

D.France小题2: A pyramid is ______.

A.a house

B.a huge stone

C.a king’s tomb

D.the name of a museum小题3:The Great Pyramid is about _______ and made of _______ huge stones.

A.137 metres high; 100,000

B.137 high metres; 2,300,000

C.137 metres; 2,300,000

D.137 meters high; 2,300,000小题4:Pyramids are built for _______.

A.the kings

B.the queens(皇后)

C.the kings' teachers

D.People小题5:The kings thought they had the pyramids built to keep their bodies until _________.

A.they came home

B.they became alive

C.they die

D.they were on show in museums

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