空调冷冻水系统的补水泵设计小时流量，宜为______。 A．冷冻水

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问题单项选择题

空调冷冻水系统的补水泵设计小时流量，宜为______。

A．冷冻水系统容量的1%
B．冷冻水系统循环水量的1%
C．冷冻水系统容量的5%～10%
D．冷冻水系统循环水量的2%～5%

答案

参考答案：C

阅读理解

阅读理解。

1. If you want to order pizzas, you can ______. [ ]

A. call at No. 348

B. call at 65369877

C. call at 28145588

D. call at No. 67

2. What type of pizzas does Mr. Smith order? [ ]

A. Hawaiian and Supreme.

B. Vegetarian and Supreme.

C. Supreme and coffee.

D. Hawaiian and Vegetarian.

3. How long is the business time every day? [ ]

A. 3 hours.

B. 8 hours.

C. 14 hours.

D. 15 hours.

4. Where will the pizzas be delivered (送)? [ ]

A. No. 348 Beijing Road.

B. No.67 Beijing Road.

C. No.67 Nanjing Road.

D. No. 348 Nanjing Road.

5. What else does Mr. Smith order besides pizzas? [ ]

A. Coffee.

B. Coke.

C. Orange.

D. Tea.

单项选择题

对一个文件来说，必须有( )。

A．文件主名

B．文件扩展名

C．文件连接符

D．文件分隔符