OC |
OA |
OB |
A.3x+2y-11=0 | B.(x-1)2+(y-2)2=5 |
C.2x-y=0 | D.x+2y-5=0 |
OC |
OA |
OB |
y-1 |
3-1 |
x-3 |
-1-3 |
A.a=3,b=-5 | B.a-b+1=0 | C.2a-b=3 | D.a-2b=0 |
OC |
OA |
OB |
x2 |
a2 |
y2 |
b2 |
OA |
OB |
OC |
A.m≠-2 | B.m≠
| C.m≠1 | D.m≠-1 |
p |
q |
p |
q |
A.锐角 | B.钝角 | C.直角 | D.不确定 |
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