因进行大修理而停用的固定资产，应当照提折旧，计提的折旧应计入相关成本费用。（）

阅读理解。

   The sea has always interested man. From it he can get food, minerals, and treasure. For thousands of years,

he could sail on it. But he could not go far beneath its surface.

    Man wants to explore deep into the sea. However, he is not a fish. He must breathe air, so he can't stay

under the water's surface for any length of time. To explore deep water, man faces even more dangers and

problems.

    A diver who wants to stay under water for more than a few minutes must breathe air or a special mixture

of gases. He can wear a diving suit and have air pumped to him from above. He can carry a tank of air on his

back and breathe through a hose and a mouthpiece. Water weighs 800 times as much as air. Tons of water

pushes against a diver deep in the sea. His body is under great pressure.

    When a diver is under great pressure, his blood takes in some of the gases he breathes. As he rises to

surface, the water pressure becomes less. If the diver rises too quickly, the gases in his blood form bubbles

(气泡). The diver is then suffering from the bends. The bends can cause a diver to double up in pain. They

can even kill him.

1. On the whole, this text is about _____.[ ]

A. special mixtures of gases in deep sea

B. the problems a diver faces in deep sea

C. air pressure under the surface of sea water

D. a kind of illness that man suffers in the sea

2. The text does not say so, but it makes you think that _____. [ ]

A. deep-sea divers should be in good health

B. divers explore the deep sea only for treasure

C. there is a special mixture of gases under the sea

D. diving under the water too quickly causes a kind of illness

3. Why does a diver get the bends?[ ]

A. The air in his blood is used up

B. His diving suit weighs too much

C. He comes to the surface too quickly

D. He tries to do exercise under the sea

4. From the text we can learn that _____. [ ]

A. man cannot stay under water for more than a few minutes

B. the sea began to interest man in the last few years

C. all divers will get the bends sooner or later

D. the bends may kill a diver

在产品上如何截取机械性能试验试样？

成束的帚用高粱

同一债权既有保证又有物的担保的，保证人的保证责任范围是( ) 。

A．物的担保责任

B．物的担保以外的保证责任

C．全部保证责任

D．由保证人与债权人协商确定的保证责任

呼吸性粉尘的粒径一般为（）um及其以下。

A、2

B、3

C、4

D、5