2019-2020
骞翠節骞寸骇鏁板涓婂唽
4.5
鐩镐技涓夎褰㈢殑鎬ц川鍙婂叾搴旂敤宸╁浐
璁粌
锛堟柊鐗堬級娴欐暀鐗?/p>
绗竴閮ㄥ垎
1
銆?/p>
涓轰簡娴嬮噺鏍″洯姘村钩鍦伴潰涓婁竴妫典笉鍙攢鐨勬爲鐨勯珮搴︼紝
瀛︽牎鏁板鍏磋叮灏忕粍鍋氫簡濡備笅鐨勬帰绱細
鏍规嵁銆婄瀛︺�嬩腑鍏夌殑鍙嶅皠瀹氬緥锛屽埄鐢ㄤ竴闈㈤暅瀛愬拰涓�鏍圭毊灏猴紝璁捐濡備笅鍥炬墍绀虹殑娴嬮噺鏂规锛?/p>
鎶婁竴闈㈠緢灏忕殑闀滃瓙鏀惧湪绂绘爲搴曪紙
B
锛?/p>
8.4
绫崇殑鐐?/p>
E
澶勶紝鐒跺悗娌跨潃鐩寸嚎
BE
鍚庨��鍒扮偣
D
锛岃繖鏃?/p>
鎭板ソ鍦ㄩ暅瀛愰噷鐪嬪埌鏍戞ⅱ椤剁偣
A
锛?/p>
鍐嶇敤鐨昂閲忓緱
DE
=2.4
绫筹紝
瑙傚療鑰呯洰楂?/p>
CD
=1.6
绫筹紝
姹傛爲
锛?/p>
AB
锛?/p>
鐨勯珮搴︼紙绮剧‘鍒?/p>
0.1
绫筹級
.
2
銆佸鍥炬槸灏忛鍦ㄥ仛鈥滈拡瀛旀垚鍍忊�濆疄楠屾椂鐨勬儏褰紝璇蜂綘鏍规嵁鍥句腑灏哄锛?/p>
AB
鈭?/p>
A
鈥?/p>
B
鈥诧級锛岀寽鎯?/p>
鐗╁儚
A
鈥?/p>
B
鈥茬殑闀夸笌鐗?/p>
AB
鐨勯暱涔嬮棿鏈変粈涔堝叧绯伙紵璇村嚭鍏朵腑鐨勯亾鐞?/p>
.
3
6
1
2
A
B
P
A
B
'
'
.
3
銆佸鍥撅紝鈻?/p>
ABC
鏄竴鍧楅攼瑙掍笁瑙掑舰浣欐枡锛岃竟
BC
=120mm
锛岄珮
AD
=80mm
锛岃鎶婂畠鍔犲伐鎴愪竴鐭╁舰