A：自感现象是线圈自身的电流变化而引起的电磁感应现象
B：自感电动势总是阻止原电流的变化
C：自感电动势的方向总与原电流方向相反
D：自感电动势的方向总与原电流方向相同
全球最大的热带雨林气候区分布在（ ）
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 times
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 (酒吧): 12:00- midnight
(1:30am on Friday/Saturday
Stratford Butterfly(蝴蝶)Farm
Tel: 01789 299288 Price Opening Hours
E-mail: sales@butterflyfarm.co.uk ￡5.50 adult Summer 10am-6am
以下不能说明细胞全能性的实验是 （ ）
