使用系数是指：［1997-010］

A:使用面积与建筑面积之比 B:结构面积与建筑面积之比 C:有效面积与建筑面积之比 D:建筑面积与使用面积之比

广州市的电话区号是：（）

A:010 B:020 C:021 D:022

菌落（c010ny）

020模式的核心是（）。

A:线上交易线下体验 B:线上交易 C:线下体验 D:线下交易线上体验

符号〔010〕表示：（）。

A:单形 B:晶轴和晶棱 C:晶面

在不同国家或地区拨打中国的固定电话时，长途区号前需加“0”，如北京长途区号应拨010，广州拨020，济南拨0531等。

40S020W位于大西洋东卫星的（）象限.

A:东南 B:东北 C:西南 D:西北

首都航空投诉电话为：010-69615155。

The following are three ads.
Driver Wanted
1. Clean driving license
2. Good-looking
3. Age over 25
Apply (申请) to: Capes Taxi, Shenzhen
Tel: 0755-6561382
Air Hostess(空姐) Wanted
1. Age between 20 and 33
2. Height from 1.6m to 1.75m
3. Two foreign languages
4. College graduate
Apply to: China airlines, Beijing
Tel: 010-88488970
Teacher Needed
For private language school
Teaching experience necessary
Apply to: Instant Languages Ltd, Dalian
Tel: 0411-4313861
You may call ______ when you wish to be a teacher.

A:0755-6561382 B:0411-4313861 C:010-88488970 D:A and B

The following are three ads.
Driver Wanted
1. Clean driving license
2. Good-looking
3. Age over 25
Apply (申请) to: Capes Taxi, Shenzhen
Tel: 0755-6561382
Air Hostess(空姐) Wanted
1. Age between 20 and 33
2. Height from 1.6m to 1.75m
3. Two foreign languages
4. College graduate
Apply to: China airlines, Beijing
Tel: 010-88488970
Teacher Needed
For private language school
Teaching experience necessary
Apply to: Instant Languages Ltd, Dalian
Tel: 0411-4313861

A:0755-6561382 B:0411-4313861 C:010-88488970 D:A and B