——Will they send their homework ______ the teacher ______ e-mail ?
——Yes , they will.
A:to , by.
B:at,with.
C:for ,by
D:by , to
在正常情况下,从毛细血管滤出的液体a,被毛细血管重吸收的液体b和进入毛细淋巴管的液体c之间的关系是( )
两个角的度数之比为7:3,它们的差为36°,求这两个角.