在第二次工业革命中兴起的产业是[ ]
A.铁路运输业
B.煤炭工业
C.汽车工业
D.轮船工业
答案:C
Questions 1-4
Which of the following is not a salesman’s strategy for selling a product?()
A.Talking about the latest fashion.
B.Offering special reductions.
C.Giving bigger discounts to female customers.
D.Pressing on the customer to make a decision.
制冷系统正常工作时,干燥瓶进出管的温度是:()
A、基本一致
B、进高出低
C、进低出高
D、温差明显