2019
骞翠腑鑰冩暟瀛﹀涔?/p>
鍔ㄧ偣銆佹渶鍊奸棶棰樺帇杞撮
鑰冪偣绐佺牬璁粌
涓�銆侀�夋嫨棰?/p>
1.
濡傚浘锛屽凡鐭ヨ彵褰?/p>
ABCD
鐨勫懆闀夸负
16
锛岄潰绉负
8
3
锛?/p>
E
涓?/p>
AB
鐨勪腑鐐癸紝鑻?/p>
P
涓哄瑙掔嚎
BD
涓婁竴鍔ㄧ偣锛屽垯
EP
锛?/p>
AP
鐨勬渶灏忓�间负
(
)
A
锛?/p>
2
3
B
锛?/p>
2
5
C
锛?/p>
3
D
锛?/p>
5
2.
濡傚浘锛岀洿绾?/p>
y
锛?/p>
2
3
x
锛?/p>
4
涓?/p>
x
杞达紝
y
杞村垎鍒氦浜庣偣
A
鍜岀偣
B
锛岀偣
C
锛?/p>
D
鍒嗗埆涓虹嚎娈?/p>
AB
锛?/p>
OB
鐨勪腑鐐癸紝鐐?/p>
P
涓?/p>
OA
涓婁竴鍔ㄧ偣锛屽綋
PC
锛?/p>
PD
鍊兼渶灏忔椂锛岀偣
P
鐨勫潗鏍囦负
(
)
A
锛?/p>
(
锛?/p>
3
锛?/p>
0)
B
锛?/p>
(
锛?/p>
6
锛?/p>
0)
C.(
锛?/p>
3
2
锛?/p>
0)
D
锛?/p>
(
锛?/p>
5
2
锛?/p>
0)
3.
濡傚浘锛屽湪
Rt
鈻?/p>
ABC
涓紝鈭?/p>
C
锛?/p>
90掳
锛?/p>
AC
锛?/p>
6 cm
锛?/p>
BC
锛?/p>
2 cm
锛岀偣
P
鍦ㄨ竟
AC
涓婏紝浠庣偣
A
鍚?/p>
鐐?/p>
C
绉诲姩锛?/p>
鐐?/p>
Q
鍦ㄨ竟
CB
涓婏紝
浠庣偣
C
鍚戠偣
B
绉诲姩锛?/p>
鑻ョ偣
P
锛?/p>
Q
鍧囦互
1 cm/s
鐨勯�熷害鍚屾椂鍑哄彂锛?/p>
涓斿綋涓�鐐圭Щ鍔ㄥ埌缁堢偣鏃讹紝鍙︿竴鐐逛篃闅忎箣鍋滄锛岃繛鎺?/p>
PQ
锛屽垯绾挎
PQ
鐨勬渶灏忓�兼槸
(
)
A
锛?/p>
20 cm
B
锛?/p>
18 cm
C
锛?/p>
2
5
cm
D
锛?/p>
3
2
cm