某航线从起始港至目的港的总货流量即去向总货流量为10000TEU，目的港至起始港即回向总货流量为20000TEU时，则该航线货流方向不平衡系数为( )。
A．0.5
B．1.5
C．2
D．3
参考答案：B
解析： 方向不平衡系数等于两个方向总货流量与正向货流量的比值，则该航线货流方向不平衡系数为：(10000+20000)/20000=1.5。
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| I was having my dinner at McDonald's one evening when an old couple slowly walked in. They 1 their meal, took a table near the window and started 2 food out of the plate. There was one hamburger, one order of French fries (炸薯条) and one drink. The man 3 the food into two halves and carefully placed 4 before his wife. He took a sip (一小口) of the drink. His wife also took one and then 5 the cup down between them. "That 6 old couple! All they can 7 is one meal for the two of them," thought I 8 the man began to eat his French fries. I 9 to my feet, went over and said that I was 10 to buy another meal for them. Bet he 11 refused me and said that they made it a 12 to share everything. 13 , the lady didn't take a bite, She sat there 14 her husband eat, and taking turns (轮流) sipping the drink. Again I 15 to buy them something but was refused. When the man finished eating and was 16 his face with a napkin (纸巾). I 17 no longer stand it. I made an offer to them a third time. 18 being politely refused, I asked the lady 19 , "Madam, why aren't you eating? You said that you share everything. 20 is it that you are waiting for?" "The teeth," she answered. | ||||
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