That's not my bike._____ , this is my bike. [ ]
A. See
B. Ask
C. Look
D. look at
C
粉尘是指悬浮于空气中的固体微粒,其直径为()。
A.等于0.1μm
B.<0.1μm
C.>0.1μm
D.大于或等于0.1μm
E.以上均不是
药物发芽时应保持的温度范围是
A.8~15℃
B.25~35℃
C.35~40℃
D.18~25℃
E.30~37℃