ڶ¿⣨ͻеܡȺܡԴɳչ
C
ʱ5070ֳɼ 1 2 3 4 5 6
һѡ⣨ÿ 2ֹ12֣
1 ˵ķڲͣ˶ AˮӸߴʹ B
伸첻ɨͻһҳ
Cڿеһʱ DһˮмΣˮ
2 ܼС Aл B еʳ¶Ƚ
C һ0Cıȫۻ 0Cˮ D ۡŷɴزս
3 ճУıܵķͬ Aг̥Ͳ B ̫ˮеˮ¶ Cȼıڿն
D
ˮʱˮǶ 4 ߴʤָɽԽߣԽͣĽʹ Aɽɭïܣʯ࣬ȴ¶ȱ仯С BɽĿƽϡɾ̫ Cɽٴɽˮߴ DȿͶɽܼ 5 Դʶȷ AȻԴغģݽ
B̫ơꡢ
CȻԳΪṩúʯ͡ȻȿԴ Dҵĺ˷Ӧᷢǿҵıըú 6ͼΪȼͼȼ ЧʿɱʾΪ
An =[ E1+E2+E3+E4 /E] X 100% Bn =[++/E] X 100% Cn = E2/E X 100% Dn = E1/E X 100%
⣨ÿ1ֹ18֣
7 ٻʢŻ㣬һ С
ʵз֣λˮԶĻ۳һΣˮ ֮
________________
8 죬ΪʹůͣôֻķʽǷֱ _________ ________ ıܡ 9 Ϊ2kgˮ̫£¶ 5C,ˮյ
Ϊ J ʹͬúͬ¶ȣ __________________ յ
϶࣬Ϊ __________
10 ˶Աڻʱ»ˮ㣬һˮ áУˮֵԭ _________________________________ 11 ľص;Ÿʡ յϺܼȻ 1.2 X 1010miЩȻȫ
ȼշų J ܵȻܶΪ
6kg/m3,ֵΪ
0.83 X 107J/kg
12 иԴAȻBˮCʯDEF
G̫HϫܡڲԴ ___________________ ; ڶԴ ________________ ;ڻʯԴ ______________________
13תתƾ ____________ Ȼغģܱ õԴģ˽ԼԴÿ˵Ρ
14 һְ 80 NĻᵽ5 mߴ ͼ3ʾõ 50 Nôù _____________ Jܹ ____________ ֵĻе Ч _______________
15 ıܵķʽȴ.
Һ¯ Ч Һÿƿ Һֵ ¯õ磩 Ч ѹ 90 % 220V 1kW 50% 15kg 3.54 X 10 7J/kg 70Ԫ/ƿ Һ۸ е۸ 0.5Ԫ/ ͻѹУѹȼϻʹ¶
ߣͨ ___________ ʽȼϻ?Ϊ˲ò ڹʱ¶̫ߣʱһˮףױ
ˮΧţͿͨ _______________ ķʽ¶ȣ ܣ.
⣨10֣
16Һ¯Ŀǰձʹõ¯ߣ¯һ ¯ߣΪrȽǵĺܷãСʤ˵飬óݣ ʣ1Сʤһ൱ڰ
3
3 ͨ㣬Ϊʹ¯ߺܷø͡ ġ⣨6֣
17Сסģӳ ̫ȶס⼤ ̽²ԭ.ij 죬ȫͬѧֱѡ ĵص㣬ͬһʱ̲ Ե£Դ˻Ƴͼ ʾġһ¶ȡͼ.
;µ͵Ҫԭ
1ͼ͵_
2һֽĻµİ취:
50kgˮ40C100 C,
һĶ 2 ĵٶ
cˮ=4.2 X 10 J/kg C
¯ṩ
Һ¯ṩȼ
նǧ˵Һ1=3. 6X 106J