..
..
鐢靛伐鐢靛瓙鎶�鏈?/p>
涓�銆侀�夋嫨棰橈紙鏈ぇ棰樺叡
25
灏忛锛屾瘡灏忛
2
鍒嗭紝鍏?/p>
50
鍒嗭級
1
銆佺悊鎯充簩鏋佺鐨勫弽鍚戠數闃讳负锛?/p>
锛?/p>
銆?/p>
A
闆?/p>
B
鏃犵┓澶?/p>
C
绾﹀嚑鐧惧崈娆?/p>
D
浠ヤ笂閮戒笉瀵?/p>
2
銆佸湪鎹㈣矾鐬棿锛屼笅鍒楀悇椤逛腑闄?/p>
( )
涓嶈兘璺冨彉澶栵紝鍏朵粬鍏ㄥ彲璺冨彉銆?/p>
(a)
鐢垫劅鐢靛帇
(b)
鐢靛鐢靛帇
(c)
鐢靛鐢垫祦
3
銆佸湪鐢垫劅鎬ц礋杞戒袱绔苟鑱斾竴瀹氬�肩殑鐢靛锛屼互鎻愰珮鍔熺巼鍥犵礌锛屼笅鍒楄娉曟纭殑鏄紙
锛?/p>
銆?/p>
(A)
鍑忓皯璐熻浇鐨勫伐浣滅數娴?/p>
(B)
鍑忓皯璐熻浇鐨勬湁鍔熷姛鐜?/p>
(C)
鍑忓皯璐熻浇鐨勬棤鍔熷姛鐜?/p>
(D)
鍑忓皯绾胯矾鐨勫姛鐜囨崯鑰?/p>
4
銆?/p>
褰撲笁鐩镐氦娴佸彂鐢垫満鐨勪笁涓粫缁勮繛鎺ユ垚鏄熷舰鏃讹紝
鑻ョ嚎鐢靛帇
V
t
u
BC
)
180
sin(
2
380
飥?/p>
飥?/p>
飦?/p>
锛?
鍒欑浉鐢靛帇
飥?/p>
C
u
锛?/p>
锛?/p>
銆?/p>
(a)
V
t
)
30
sin(
2
220
飥?/p>
飦?/p>
(b)
V
t
)
30
sin(
2
380
飥?/p>
飦?/p>
(c)
V
t
)
120
sin(
2
380
飥?/p>
飦?/p>
锛?/p>
d
锛?
220
2
sin(
30
)
t
飦?/p>
飥?/p>
5
銆佷袱涓畬鍏ㄧ浉鍚岀殑浜ゆ祦閾佸績绾垮湀锛屽垎鍒伐浣滃湪鐢靛帇鐩稿悓鑰岄鐜囦笉鍚?/p>
(f1>f2)
鐨勪袱鐢垫簮涓嬶紝姝ゆ椂绾垮湀鐨勭閫?/p>
飦?/p>
1
鍜?/p>
飦?/p>
2
鍏崇郴鏄?/p>
( )
銆?/p>
(a)
飦?/p>
1 >
飦?/p>
2 (b)
飦?/p>
1<
飦?/p>
2 (c)
飦?/p>
1=
飦?/p>
2
6
銆佷竴璐熻浇鐢甸樆涓?/p>
RL
锛岀粡鍙樺帇鍣ㄦ帴鍒板唴闃?/p>
R0
锛?/p>
800
惟
鐨勭數婧愪笂锛屽彉鍘嬪櫒鍘熴�佸壇缁曠粍鐨勯瀹氱數娴佷负
2A
锛?/p>
20A
锛岃嫢浣?/p>
浠庡彉鍘嬪櫒鍘熺粫缁勭湅杩涘幓鐨勭瓑鏁堣礋杞界數闃?/p>
RL
鈥诧紳
R0
鏃讹紝鍒?/p>
RL
绛変簬锛?/p>
锛?/p>
(a) 0.8
惟
(b) 8
惟
(c) 80
惟
(d) 800
惟
7
銆?/p>
3
飦?/p>
k
鐨勭數闃讳腑閫氳繃
2
mA
鐨勭數娴侊紝璇曢棶鐢甸樆涓ょ鐨勭數鍘嬫槸锛?/p>
锛?/p>
銆?/p>