白细胞的生理特性有（）.
A.变形运动
B.渗出性
C.吞噬作用
D.趋化性
参考答案：A, B, C, D
— What do you think of Putin?
— He is an outstanding leader who _____ his reputation. [ ]
A. looks out for
B. comes up with
C. lives up to
D. looks forward to
通常情况下，遂行机动保障任务时，1个防化兵侦察组可担负（）线路的侦察。
A、一条
B、两条
C、三条
D、四条
