填料塔中，液体顺着填料表面呈（）向下流动。
A.汽状
B.气泡状
C.膜状
D.以上都不对
参考答案：C
Not only he but also we _____ right, that is to say, he as well as we _____ right. [ ]
A. are; are
B. is; is
C. is; are
D. are; is
国外营销学界研究表明：如果顾客在银行享受4种或者4种以上的服务，那么银行留住顾客的概率将是（）
A.100%
B.43%
C.92%
D.18%
