分别画出立方晶胞的[*]晶向和(021)晶面,六方晶胞的[*]晶向和[*]晶面。
参考答案:如图7-2所示。 [*] [*]
有载体的参加,有饱和现象,不消耗能量( )
A.被动扩散B.主动转运C.促进扩散D.胞饮E.吸收
Shipping agents will ( )the goods to be shipped.
A.arrange
B.arrange for
C.see to it
D.see that