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【单选题】
Borger Sullivan is an air traffic controller at one of the nation's largest airports. His job is uninteresting and tension-packed job because it means directing hundreds of jet airplanes to safe landings and take-offs every day. But the tensions have never troubled Sullivan as much as how to relax at the end of a busy day. He has tried bowling and bicycling, chess, and bridge, to list a few amusements. But the problem was never really solved until he bought a boat. It was not an ordinary boat for fishing, sailing, racing or the usual water sports. Instead it was a single platform mounted on parallel pontoons with awning on top for shade and a small outboard for power. Now, several times each week, Sullivan drives directly to where the boat is moored and his wife is waiting. Then after a short sail to a quiet bay, they cook dinner on board. Besides the Sullivans, who else do you think benefit from their relaxing hobby?
A.
Boat rental business.
B.
Airline passengers.
C.
Chess club members.
D.
Airport employees.
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参考答案:
举一反三
【单选题】许昌市的市花是( )
A.
牡丹
B.
月季
C.
菊花
D.
荷花
【判断题】国际直接投资,从流向上可以分为两大类,一类叫做外来直接投资,也称为FD I流入,另一类是对外直接投资,也称为FDI流出
A.
正确
B.
错误
【单选题】牡丹是我国传统名花,富丽堂皇,国色天香,自古就有富贵吉祥、繁荣昌盛的寓意。我国以牡丹花而闻名的两座城市是 [     ]
A.
开封、洛阳
B.
菏泽、许昌
C.
洛阳、菏泽
D.
郑州、许昌
【判断题】EPM和EPDM性能完全一样。
A.
正确
B.
错误
【单选题】( 10 )有三个关系 R 、 S 和 T 如下: 由关系 R 和 S 通过运算得到关系 T ,则所使用的运算为
A.
)笛卡尔积
B.
)交
C.
)并
D.
)自然连接
【单选题】无线承载在UE和eNB之间传送什么数据包?( )
A.
EPS
B.
RR
C.
MM
D.
EPM
【简答题】有三个关系 R , S 和 T 如下: 由关系 R 和 S 通过运算得到关系 T, 则所使用的运算为 A) 并 B) 自然连接 C) 笛卡尔积 D) 交
【简答题】大肠杆菌RNA聚合酶如何识别启动子?
【单选题】EPM is a ( ) of ethylene and propylene.
A.
radom copolymer
B.
block copolymer
C.
graft copolymer
D.
alternated copolymer
【简答题】EPM的核心概念是什么?它和IPM的着眼点有什么不同?
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