如图所示,电源由3节干电池串接组成,L1两端的电压值是2V,则L2两端的电压值是:
A.2V
B.4V
C.2.5V
D.4.5V
答案:C
根据句子的内容,把对应的选项填在括号内。
In the morning, Jam gets up and eats breakfast. He likes fruit. Mary is hungry. She wants to eat some
chicken and fish for her lunch. In the evening, Bill eats supper. His favourite food is rice and soup.
1. 2. 3.
( ) ( ) ( )
a. b. c.
Mary Bill Jam
A. B. C. D. E.
甲烷的沸点为()
A.162.6°C
B.100°C
C.-100°C
D.-162.6°C