关于催化剂的下列叙述，不正确的是：（）A、催化剂不能改变反应的化学平衡 B、催化剂能

在水溶液中不稳定的药物一般可制成（）

A.固体制剂

B.微囊

C.包合物

D.乳剂

E.难溶性盐

阅读理解。

     Hidden passengers traveling in ships, trucks, or even cars can be a terrible trouble. As for this, there is a great difference between human beings and insects. The former make every possible effort to avoid being discovered. _1_.

     _2_. Hearing a strange noise from the back of the car, he naturally got out to examined

the wheels carefully, but he found nothing wrong, so he continued his way.  _3_. Quickly turning his head,

the man saw something like a great black cloud following the car. When he stopped at a village further on, he was told that a queen bee must be hidden in his car as there were thousands of bees nearby.

     _4_. After an hour's hard driving, he arrived safely in London, where he parked his car

outside a hotel and went in. Soon afterwards a customer who had seen him arrive hurried in to tell him that his car was covered with bees. And he advised that he should call a bee- keeper. _5_.  He found the

unwelcome passenger hidden near the wheels at the back of the car. Very thankful to the driver for this

unexpected gift, the bee-keeper took the queen and her thousands of followers home in a large box.

A. In a short time a bee-keeper arrived.

B. Insects are very important to human beings.

C. An unfortunate man had to stop his car on his way from a country village to drive to London

D. On learning this, the man drove away as quickly as possible.

E. The driver gave the bee-keeper a special gift.

F. Again the noise began immediately and became even louder.

G. The latter, however, quickly draw attention to

早在1897年，广东东莞人（）就草拟了“，”“。”等10种符号，这是我国标点符号之始，距今已有百余年。

试述联合调节器停车装置的组成及工作原理？