1
鐩镐氦绾垮強骞宠绾垮涔?/p>
1.
濡傚浘鎵�绀?/p>
,
鈭?/p>
1
鍜屸垹
2
鏄椤惰鐨勫浘褰㈡湁
(
)
1
2
1
2
1
2
2
1
A.1
涓?/p>
B.2
涓?/p>
C.3
涓?/p>
D.4
涓?/p>
2.
濡傚浘鎵�绀?/p>
,
宸茬煡鐩寸嚎
AB
,
CD
鐩镐氦浜?/p>
O
,
OA
骞冲垎鈭?/p>
EOC
,
鈭?/p>
EOC
=70掳
,
鍒欌垹
BOD
=
鈥?/p>
______.
3.
濡傚浘鎵�绀?/p>
,
鐩寸嚎
AB
,
CD
鐩镐氦浜庣偣
O
,
宸茬煡鈭?/p>
AOC
=70掳
,
OE
鎶娾垹
BOD
鍒嗘垚涓ら儴鍒?/p>
,
鈥?/p>
涓斺垹
BOE
:
鈭?/p>
EOD
=2:3,
鍒欌垹
EOD
=________.
4.
濡傚浘鎵�绀?/p>
,
鐩寸嚎
a
,
b
,
c
涓や袱鐩镐氦
,
鈭?/p>
1=2
鈭?/p>
3,
鈭?/p>
2=65掳
,
姹傗垹
4
鐨勫害鏁般�?/p>
5.
濡傚浘鎵�绀猴紝鈭?/p>
AOB
=
鈭?/p>
COD
=90掳
锛屽垯涓嬪垪鍙欒堪涓纭殑
鏄紙
锛?/p>
A.
鈭?/p>
AOC
=
鈭?/p>
AOD
B.
鈭?/p>
AOD
=
鈭?/p>
BOD
C.
鈭?/p>
AOC
=
鈭?/p>
BOD
D.
浠ヤ笂
銆愮粌涔犮�?/p>
1
銆佷笅鍒楄鍙ユ纭殑鏄紙
锛?/p>
.
A
銆佺浉绛夌殑瑙掓槸瀵归《瑙?/p>
B
銆佺浉绛夌殑涓や釜瑙掓槸閭昏ˉ瑙?/p>
C
銆佸椤惰鐩哥瓑
D
銆侀偦琛ヨ涓嶄竴瀹氫簰琛ワ紝浣嗗彲鑳界浉绛?/p>
2
銆佷笅鍒楄鍙ラ敊璇殑鏈夛紙
锛変釜
.
锛?/p>
1
锛変袱涓鐨勪袱杈瑰垎鍒湪鍚屼竴鏉＄洿绾夸笂锛岃繖涓や釜瑙掍簰涓哄椤惰
锛?/p>
2
锛夋湁鍏叡椤剁偣骞朵笖鐩哥瓑鐨勪袱涓鏄椤惰
锛?/p>
3
锛夊鏋滀袱涓鐩哥瓑锛岄偅涔堣繖涓や釜瑙掍簰琛?/p>
锛?/p>
4
锛夊鏋滀袱涓涓嶇浉绛夛紝閭ｄ箞杩欎袱涓涓嶆槸瀵归《瑙?/p>
A
銆?/p>
1 B
銆?/p>
2 C
銆?/p>
3 D
銆?/p>
4
O
E
D
C
B
A
O
E
D
C
B
A
c
b
a
3
4
1
2