订定品质机动幅度的办法有（） A.规定范围 B.规定极限 C.规定上下差异 D.规定

消化性溃疡慢性穿孔多见于（）。

A.胃前壁溃疡

B.胃后壁溃疡

C.球前壁溃疡

D.球后壁溃疡

E.球后溃疡

The first walk into outer space was taken by a Soviet astronaut. Astronaut Zhai Zhigang became the first Chinese to walk in space on September 27, 2008. It showed that it was quite safe for a man to be outside the spaceship for a certain period of time. But to walk in space, astronauts have to meet with many kinds of difficulties and dangers.
The spaceship goes round the earth at an altitude of about 200 kilometers above its surface. At such altitudes there is no atmosphere which protects the life on the earth. The conditions of outer space are very harmful to man.
The boiling point of liquids goes down with pressure. But pressure outside the spaceship is nearly zero. In such conditions the decompression of the spacesuit may cause the boiling of the blood and quick death. There is radiation from space and it is harmful.
Breathing problems in space can be solved with the help of the spacesuit. Another problem is heat. Man gives off heat in the course of his activity, and the harder the labor is, the greater the amount of heat is. In space unless special measures are taken, the heat inside the spacesuit would make the conditions difficult.

将划线的句子翻译成汉语。

如图所示，一束由两种单色光混合的复色光沿PO方向射向一上、下表面平行的厚玻璃平面镜的上表面，得到三束光线I．Ⅱ、Ⅲ，若 平面镜的上下表面足够宽，则   。（选对一个给3分，选对两个给4分，选对3个给6分。每选错一个扣3分，最低得分为0分）

A．光束I仍为复色光，光束Ⅱ、Ⅲ为单色光

B．玻璃对光束Ⅲ的折射率大于对光束Ⅱ的折射率

C．改变α角，光线I、Ⅱ、Ⅲ仍保持平行

D．通过相同的双缝干涉装置，光束II产生的条纹宽度要小于光束III的E．在真空中，光束II的速度要大于光束III的速度

下列哪项不是郁金的功效（）

A.活血行气止痛

B.解郁清心

C.利胆退黄

D.祛风止痛

E.凉血

柴胡与薄荷均具有的功效是（）。

A.疏肝解郁

B.理气调中

C.化湿行气

D.消积行气

E.发散风寒