若两个角的两边分别平行,且这两个角的差为40°,则这两角的度数分别是[ ]
A.150°和110°
B.140°和100°
C.110°和70°
D.70°和30°
答案:C
He made three good friends in the university, ______ joined the army after graduation.
A.one of them
B.one of whom
C.one
D.one of which
自动主汽门活动试验要求汽门处在全开位置时进行。()