WORD
鏂囨。涓嬭浇鍙紪杈?/p>
涓撲笟璧勬枡绮惧績鏁寸悊
婀栧崡鐪佸鍙ｅ崌瀛︾數瀛愮數宸ョ被涓撲笟缁煎悎鐭ヨ瘑妯℃嫙璇曢
锛堟椂閲忥細
150
鍒嗛挓
婊″垎锛?/p>
390
鍒嗭級
濮撳悕锛?/p>
________________
涓�銆佸崟閫夐锛堟瘡涓皬棰?/p>
6
鍒嗭紝鍏?/p>
120
鍒嗭級
1
銆佺數璺鍥?/p>
1
鎵�绀猴紝
a
銆?/p>
b
涔嬮棿鐨勭瓑鏁堢數闃讳负
-----------------
锛?/p>
锛?/p>
A
銆?/p>
2
飦?/p>
B
銆?/p>
4
飦?/p>
C
銆?/p>
6
飦?/p>
D
銆?/p>
8
飦?/p>
鍥?/p>
1
鍥?/p>
3
2
銆佸湪涓嬪垪鎵�绀虹數璺腑锛岀數婧愮數鍘嬫槸
12V
锛屽洓鍙摝鏁扮浉鍚岀殑鐧界偨鐏伐浣滅數鍘嬮兘
鏄?/p>
6V
锛岃浣跨櫧鐐界伅姝ｅ父宸ヤ綔锛屾帴娉曟纭殑鏄?/p>
-----------------
锛?/p>
锛?/p>
A
銆?/p>
B
銆?
C
銆?
D
銆?/p>
3
銆佺數璺鍥?/p>
3
涓紝
a
锛?/p>
b
涔嬮棿鐨勫紑璺數鍘?/p>
Uab
涓?/p>
----------------
锛?/p>
锛?/p>
A
銆?/p>
-10V
B
銆?/p>
-20V
C
銆?/p>
10V
D
銆?/p>
20V
4
銆佹牴鎹浘
4
鎵�绀虹數璺紝閫夋嫨姝ｇ‘鐨勮〃杈惧紡銆傚皢瀹冪殑缂栧彿濉啓鍦ㄦ嫭鍙峰唴锛?/p>
锛?/p>
A
銆?/p>
1
2
(
)
(
)
(
)
(
)
ab
s
u
t
u
t
u
t
u
t
飥?/p>
飥?/p>
飥?/p>
B
銆?
1
2
0
ab
s
U
U
U
U
飥?/p>
飥?/p>
飥?/p>
飥?/p>
C
銆?
2
1
0
ab
s
U
U
U
U
飥?/p>
飥?/p>
飥?/p>
飥?/p>
D
銆?/p>
1
2
(
)
(
)
(
)
(
)
ab
s
u
t
u
t
u
t
u
t
飥?/p>
飥?/p>
飥?/p>
飥?/p>
5
銆?/p>
鐢佃矾濡傚浘
5
鎵�绀猴紝鐢垫簮鐢靛姩鍔?/p>
E=12V
锛?/p>
r=1
惟锛?/p>
鐢甸樆
R1=3
惟锛?/p>
R2=2
惟锛?/p>
R3=5
惟锛岀數瀹?/p>
C1=4
渭
F
锛?/p>
C2=1
渭
F
锛屽垯
C1
銆?/p>
C2
鎵�甯︾數閲忎箣姣斾负
---
锛?/p>
锛?/p>
A
銆?/p>
3:2
B
銆?/p>
5:3
C
銆?/p>
5:4
D
銆?/p>
8:5