蓝色输送管道表示输送的介质是()。
A.氧气
B.煤气
C.蒸汽
参考答案:A
—My good friend Tom, together with his classmates, going to visit Shenzhen.
—Will he phone you as soon as he here?
A.are; arrives
B.are; will arrive
C.is; arrives
D.is; will arrive
市场利益是运输市场对运输供需双方交易行为导向的指挥棒。