璇曞嵎绗?/p>
1
椤碉紝鎬?/p>
4
椤?/p>
鍐�鏁欑増鍏勾绾т笂鍐屾暟瀛︾鍗佷簩绔犲垎寮忓拰鍒嗗紡鏂圭▼鍗曞厓璇?/p>
鑰冭瘯鏃堕棿
100
鍒嗭紝婊″垎
120
鍒?/p>
棰樺彿
涓�
浜?/p>
涓?/p>
鎬诲垎
寰楀垎
璇勫嵎浜?/p>
寰楀垎
涓�銆佸崟閫夐锛堣
30
鍒嗭級
1
锛?/p>
锛?/p>
3
鍒嗭級涓嬪垪鍚勫紡锛氣憼
1
a
锛屸憽
1
x
飦?
飥?/p>
锛屸憿
1
5
x
飥?/p>
锛屸懀
2
2
x
y
飥?/p>
锛屽叾涓槸鍒嗗紡鐨勬湁锛?/p>
锛?/p>
A
锛?/p>
鈶犫憽鈶⑩懀
B
锛?/p>
鈶犫懀
C
锛?/p>
鈶犫憽鈶?/p>
D
锛?/p>
鈶♀懀
2
锛?/p>
锛?/p>
3
鍒嗭級鑻ュ垎寮?/p>
3
x
x
飥?/p>
鏈夋剰涔夛紝鍒?/p>
x
鐨勫彇鍊艰寖鍥存槸锛?/p>
锛?/p>
A
锛?/p>
x
锛?/p>
3
B
锛?/p>
x
锛?/p>
3
C
锛?/p>
x
鈮?
D
锛?/p>
x
锛?/p>
3
3
锛?/p>
锛?/p>
3
鍒嗭級鑻ュ垎寮?
2
ab
a
b
飥?/p>
涓?/p>
,
a
b
閮芥墿澶у埌鍘熸潵鐨?/p>
3
鍊嶏紝鍒欏垎寮?/p>
2
ab
a
b
飥?/p>
鐨勫�兼槸锛?/p>
锛?/p>
A
锛庢墿澶у埌鍘熸潵
3
鍊?/p>
B
锛庣缉灏?/p>
3
鍊?/p>
C
锛庢槸鍘熸潵鐨?/p>
1
3
D
锛庝笉鍙?/p>
4
锛?/p>
锛?/p>
3
鍒嗭級涓嬪垪鍥涗釜鍒嗗紡涓紝鏄渶绠�鍒嗗紡鐨勪负锛?/p>
锛?/p>
A
锛?/p>
2ax
3ay
B
锛?/p>
2
x
2x
1
x
1
飥?/p>
飥?/p>
飥?/p>
C
锛?/p>
2
2
a
b
a
b
飥?/p>
飥?/p>
D
锛?/p>
2
2
a
b
a
b
飥?/p>
飥?/p>
5
锛?/p>
锛?/p>
3
鍒嗭級鍙箰涓惈鏈夊ぇ閲忕殑鍜栧暋鍥狅紝涓栫晫鍗敓缁勭粐寤鸿闈掑皯骞存瘡澶╁挅鍟″洜鐨勬憚鍏ラ噺涓?/p>
鑳借秴杩?/p>
0.000085kg
.
鍒?/p>
0.000085
杩欎釜鏁板瓧鍙敤绉戝璁版暟娉曡〃绀轰负锛?/p>
锛?/p>
A
锛?/p>
5
8.5
10
飥?/p>
飩?/p>
B
锛?/p>
6
85
10
飥?/p>
飩?/p>
C
锛?/p>
6
8.5
10
飥?/p>
飩?/p>
D
锛?/p>
4
0.85
10
飥?/p>
飩?/p>
6
锛?/p>
锛?/p>
3
鍒嗭級褰?/p>
m
涓轰綍鍊兼椂锛屾柟绋?/p>
2
3
3
x
m
x
x
x
飥?/p>
飥?/p>
飥?/p>
飥?/p>
浼氫骇鐢熷鏍?/p>
(
)
A
锛?/p>
2
B
锛庯紞
1
C
锛?/p>
3
D
锛庯紞
3
7
锛?/p>
锛?/p>
3
鍒嗭級涓嬪垪鍚勫紡涓紝鏄垎寮忔柟绋嬬殑鏄紙
锛?/p>
A
锛?/p>
x+y=5
B
锛?
2
2
5
3
x
y
z
飥?/p>
飥?/p>
飥?/p>
C
锛?/p>
1
x
D
锛?
0
5
y
x
飥?/p>
飥?/p>
8
锛?/p>
锛?/p>
3
鍒嗭級濡傛灉鍒嗗紡
1
1
x
x
飥?/p>
飥?/p>
鐨勫�间负闆讹紝閭ｄ箞
x
绛変簬
(
)
A
锛?/p>
1
飥?/p>
B
锛?/p>
0
C
锛?/p>
1
D
锛?/p>
飩憋�?/p>
9
锛?/p>
锛?/p>
3
鍒嗭級宸茬煡
P=
9
99
99
9
锛?/p>
Q=
9
90
11
9
锛屽垯
P
銆?/p>
Q
鐨勫ぇ灏忓叧绯绘槸
(
)