销卡（准贷记卡）业务，客户身份证件验证方式（）。
A.出示、核查
B.出示核查并留存
C.出示、不核查
D.出示核查不留存
参考答案：C
—Can you guess what’s the front page news today?
—Of course, these days everybody _____ about the earthquake.[ ]
A. is talking
B. talked
C. has talked
D. had talked
对于饱和蒸汽进料，上升到精馏段的蒸汽流量V与提馏段蒸汽流量V′、原料液流量F的关系是（）。
A、V=V′+F
B、V＜V′
C、V＞V′+F
D、V＜V′+F
