蒸气压缩式制冷装置的下列主要元件：Ⅰ.压缩机、Ⅱ.膨胀阀、Ⅲ.

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问题单项选择题

蒸气压缩式制冷装置的下列主要元件：Ⅰ.压缩机、Ⅱ.膨胀阀、Ⅲ.冷凝器、Ⅳ.蒸发器，冷剂的正确流过程序是（）。

A．Ⅰ、Ⅱ、Ⅲ、Ⅳ

B．Ⅳ、Ⅲ、Ⅱ、Ⅰ

C．Ⅰ、Ⅲ、Ⅱ、Ⅳ

D．Ⅳ、Ⅱ、Ⅲ、Ⅰ

答案

参考答案：C

填空题

在下列各句的空白处填入一个最恰当的单词，使句子意思完整，语法正确。

1.—_______ gloves are these?

—They are Mary's.

2. In many countries people _______ hands when they meet for the first time.

3. Miss Green k________ her daughter and said good night to her.

4. An elephant is the largest animal on ____ .

5. He used to hate me. But now his attitude __ me has changed a lot.

6. Japanese and Koreans _ __ _ when they meet for the first time.

7. The teacher and students _ ____ each other at the beginning of every class.

8. Eating dumplings on the eve of the Spring Festival is a Chinese_______.

9. Many people are lying on the beach. They look very _ _____.

10. __ is a country that is famous for making watches.

判断题

税收扣除是指从应纳税额中扣除税收抵免额。