挑战习题
1/5单选题
难度:

1.

如图,要在公路道a上修建一个加油站,有A,B两人要去加油站加油,可使两人到加油站的总路程最短,下列作图正确的是( )



A

B

C

D

提示1:
PHA+6L+H54K5QeWBmuWvueensOeCuTwvcD4=
提示2:
PHA+5Yip55So5Lik54K55LmL6Ze057q/5q615pyA55+tPC9wPg==
正确答案:Qg==
PGRpdj48aW1nIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvRkMvRjcvckJBQ0ZGTUowUV95Q3BQZEFBQUxXMGd4RUd3NDEzLnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9GQy9GNy9yQkFDRkZNSjBRX3lDcFBkQUFBTFcwZ3hFR3c0MTMucG5nIiBoZWlnaHQ9IjE1MSIgd2lkdGg9IjE4NiI+PC9kaXY+