2019-2020
瀛﹀勾楂樹腑鐗╃悊
绗笁绔?/p>
鐮旂┒鐗╀綋闂寸殑鐩镐簰浣滅敤闃舵璐ㄩ噺
妫�娴嬶紙鍚В鏋愶級绮ゆ暀鐗堝繀淇?/p>
1
涓�銆?/p>
鍗曢」閫夋嫨棰?/p>
(
鏈鍏?/p>
4
涓皬棰橈紝
姣忓皬棰?/p>
5
鍒嗭紝
鍏?/p>
20
鍒嗐�?/p>
鍦ㄦ瘡灏忛缁欏嚭鐨勫洓涓�夐」涓紝
鍙湁涓�涓�夐」姝ｇ‘锛岄�夊鐨勫緱
5
鍒嗭紝閫夐敊鎴栦笉绛旂殑寰?/p>
0
鍒?/p>
)
1.
濡傚浘
1
鎵�绀猴紝
缃簬姘村钩鍦伴潰鐨勪笁鑴氭灦涓婂浐瀹氱潃涓�璐ㄩ噺涓?/p>
m
鐨勭収鐩告満銆?/p>
涓夎剼鏋剁殑涓夋牴杞昏川鏀灦绛夐暱锛屼笌绔栫洿鏂瑰悜鍧囨垚
30掳瑙掞紝鍒欐瘡鏍规敮鏋朵腑鎵?/p>
鍙楃殑鍘嬪姏澶у皬涓?/p>
(
)
A.
1
3
mg
B.
2
3
mg
鍥?/p>
1
C.
3
6
mg
D.
2
3
9
mg
瑙ｆ瀽锛?/p>
棰樹腑姣忔牴鏀灦瀵圭収鐩告満鐨勪綔鐢ㄥ姏
F
娌挎瘡鏍规敮鏋跺悜涓婏紝
杩欎笁涓姏鐨勫悎鍔涚瓑浜庣収鐩告満
鐨勯噸鍔涳紝鎵�浠ユ湁
3
F
cos 30掳锛?/p>
mg
锛屽緱
F
锛?/p>
mg
3cos 30掳
锛?/p>
2
3
9
mg
锛屾晠閫夐」
D
姝ｇ‘銆?/p>
绛旀锛?/p>
D
2.
涓�閾佸潡
m
琚珫鐩存偓鎸傜殑纾佹�ч粦鏉跨揣绱у惛浣忎笉鍔紝濡傚浘
2
鎵�绀恒�備笅鍒楄娉?/p>
閿欒鐨勬槸
(
)
A
锛庨搧鍧楀彈鍒板洓涓姏浣滅敤锛屽叾涓湁涓変釜鍔涚殑鏂藉姏鐗╀綋鍧囨槸榛戞澘
B
锛?/p>
閾佸潡涓庨粦鏉块棿鍦ㄦ按骞虫柟鍚戞湁涓ゅ鐩镐簰浣滅敤鍔涒�斺�斾簰鐩稿惛寮曠殑纾佸姏鍜岀浉浜?/p>
浣滅敤鐨勫脊鍔?/p>
鍥?/p>
2
C
锛庣鍔涘拰寮瑰姏鏄簰鐩稿钩琛＄殑鍔?/p>
D
锛庣鍔涘ぇ浜庡脊鍔涳紝榛戞澘鎵嶈兘鍚镐綇閾佸潡涓嶅姩
瑙ｆ瀽锛氬
m
鍙楀姏鍒嗘瀽濡傚浘鎵�绀猴紝鐢卞钩琛℃潯浠跺彲鐭ワ細纾佸姏
F
寮?/p>
涓庢敮鎸佸姏
F
N
鏄竴瀵瑰钩琛″姏銆?/p>
A
銆?/p>
B
銆?/p>
C
璇存硶姝ｇ‘锛屾晠閫?/p>
D
銆?/p>
绛旀锛?/p>
D
3
锛?/p>
涓�杞诲脊绨у師闀夸负
10
cm
锛?/p>
鍦ㄥ畠鐨勪笅绔寕涓�涓川閲忎负
400
g
鐨勭墿浣撴椂锛?/p>
寮圭哀闀垮害涓?/p>
12
cm
锛?/p>
鑻ュ湪瀹冪殑涓嬬鎸備笂涓�璐ㄩ噺涓?/p>
800 g
鐨勭墿浣撴椂锛屽脊绨ч暱搴﹀簲涓?/p>
(
浠嶅湪寮规�ч檺搴﹀唴
)(
)
A
锛?/p>
24 cm
B
锛?/p>
14 cm
C
锛?/p>
20 cm
D
锛?/p>
15 cm
瑙ｆ瀽锛氱敱棰樻剰鍙煡
m
1
g
锛?/p>
k
(
x
1
锛?/p>
x
0
)
锛?/p>
m
2
g
锛?/p>
k
(
x
2
锛?/p>
x
0
)
锛屼袱寮忚仈绔嬩唬鍏ユ暟鍊艰В寰?/p>
x
2
锛?/p>
14
cm
锛?