AB |
BC |
CA |
AB |
MB |
BO |
OM |
AB |
AC |
BD |
CD |
OA |
OC |
BO |
CO |
A.1 | B.2 | C.3 | D.4 |
AB |
BC |
CA |
AC |
CA |
0 |
AB |
MB |
BO |
OM |
AB |
MB |
BO |
OM |
AB |
0 |
AB |
AB |
AC |
BD |
CD |
AB |
CA |
BD |
DC |
CB |
BC |
0 |
OA |
OC |
BO |
CO |
BO |
OA |
OC |
CO |
BA |
AB |
BC |
AC |
A.(1,-4) | B.(-1,4) | C.(2,-1) | D.(3,2) |
AB |
AC |
AM |
A.
| B.
| C.
| D.-
|
AB |
a |
AC |
b |
AM |
A.
| B.
| C.
| D.
|
A.向东南航行
| B.向东南航行2km | ||
C.向东北航行
| D.向东北航行2km |
AB |
a |
AC |
b |
AM |
A.
| B.-
| C.
| D.-
|
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