A:实验①中红磷未燃烧,说明红磷的着火点高于白磷
B:实验②中白磷燃烧,说明实验②中的热水温度高于实验①
C:实验②中如果停止通入氧气,燃着的白磷会熄灭
D:可燃物燃烧需要氧气(或空气),并达到着火点
A
The Cartoon Museum
Come and see the best of British cartoon art. There is something for everyone—including popular cartoon characters and a great shop full of funny books and cards.
Price: £4.00
Opening time:
Tuesday – Saturday 10:30-17:30
Sunday 12:00-18:00
Cox's Hotel
Tel: 01789 404600
E-mail: info@coxshotel.co.uk
Website: www.coxshotel.co.uk
Coffee shop: 9:00am-6:00pm
Tea room: 10:30am-5:30pm
Pub: 12:00- midnight (1:30am on Friday/Saturday)
Stratford Butterfly(蝴蝶)Farm
Tel: 01789 299288
E-mail: sales@butterflyfarm.co.uk
Visit: www.butterflyfarm.co.uk www.jxyyjx.com
Price: £5.50 adult £4.50 child £16 family
Opening Hours: Summer 10am-6am
Winter 10am-4:30pm
从方框中选择适当的单词填空, 补全句子。
A. aloud B. between C. sweep D. twice E. polite F. friendly
两个同心圆的半径之比为3:5,AB是大圆的直径,大圆的弦BC与小圆相切,若AC=12,那么BC=( )
下列数组中,不是勾股数组的是 ( )