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问题 单项选择题

物业的供电种类，按供电性质可分为( )。

A．单回路供电和多回路供电
B．长期供电和临时供电
C．无自备电源供电和有自备电源供电
D．高压供电和低压供电

答案

参考答案：B

填空题

根据句意及首字母或者图片提示填空。

1. English isn't d_______ to learn, if you have an efficient method.

2. I like v_______ very much, for it is very fun.

3. Playing _______ is indeed really interesting.

4. My sister has a ping-pong _______.

5. _______ is young boys' favorite.

6. We need a _______ ball, Dad!

7. Does your sister have a _______?

8. —Where is your pencil, Dave? —It's in the _______ on the desk.

9. There are many _______ on the tree.

10.  His sister has two _______ They're very nice.

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单项选择题

某水库除险加固工程建设工地拟申报水利系统文明建设工地。根据申报条件，其已完工程量一般应达全部建安工程量的( )以上。

A．20%

B．30%

C．50%

D．70%
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