关系营销的理论基础与前提是()
A.4P’S
B.6P’S
C.4C’S
D.CIS
参考答案:C
We saw the dog jumping into the room _____ window. [ ]
A. across
B. through
C. cross
D. by
下列疾病在传染过程中表现为"显性感染"多的是()
A.乙脑
B.麻疹
C.白喉
D.流脑
E.脊髓灰质炎