矿物呈橄榄绿色，玻璃光泽，无解理，粒状，该矿物可定名为()
A．辉石
B．角闪石
C．绿泥石
D．橄榄石
参考答案：D
Those who ____ in ____compositions, please hand them in this afternoon.[ ]
A. hasn’t handed; his
B. haven’t handed; their
C. has handed; their
D. have handed; his
多数液液传质设备都有外加机械能，有关机械装置将破坏严格的（）流流动而造成返混
A.并
B.逆
C.错
D.混
