A.α取3.03,β取-15.09 B.α取-3.03,β取15.09 C.α取3.03,β取15.09 D.α取-3.03,β取-15.09
A.1.50 B.1.65 C.1.88 D.2.19
A.100S B.120S C.150S D.180S