检查桑塔纳转向油泵压力：发动机怠速运转时，急速关闭截止阀（不

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问题单项选择题

检查桑塔纳转向油泵压力：发动机怠速运转时，急速关闭截止阀（不超过5s），额定压力应为（）。

A.68～82kPa

B.500～600kPa

C.637～784kPa

D.6.8～8.2MPa

答案

参考答案：C

阅读理解

Doing experiments can be interesting, and you may try the following experiments at home. Make sure that you’ll do them with an adult.

小题1:How many experiments are there in the pictures?

A．Six.

B．Five.

C．Three.

D．Two.小题2:The following are the instructions on how to do “Step 2” in these experiments. Which one is the right order?

a. Pour 3/4 of the water away.

b. Put a balloon on the bottle.

c. Put the bottle in a bucket of hot water. The air rises into the balloon.

A．a, b, c

B．a, c, b

C．b, a, c

D．c, a, b小题3:What can you see in the bottle at last in Experiment A?

A．Some ice.

B．Some water.

C．Some ice and water.

D．A cloud and some water.小题4:What will happen to the balloon in “Step 3” in Experiment C?

A．It will be bigger.

B．It will be broken.

C．It won’t change.

D．It will be in the bottle.

问答题简答题

试述病例分型。