B
C
D
4 R
A B
C D
5 ()
A B 5 V
C 5 J D 0.6 A
6
A
B
C
D 100%
7 20min
0.3kW?h
A B C D
8
[J/ kg? ]
4.2 10 32.1 10 3
2.4 10 3 0.92 10 3
2.1 10 30.88 10 3
0.14 10 30.39 10 3
A
B
C100 g 1.2 10 3 J/ kg?
D
9 R
