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【单选题】
关于“水上飞机”,下列说法正确的是()。1在空中飞行的“水上飞机”仍属于规则定义的水上飞机;2气垫船属于水上飞机;3地效船属于水上飞机。
A.
①
B.
①③
C.
②③
D.
①②③
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参考解析：
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【单选题】Amphibious vehicles, those that can move on both land and water, have been in use for a number of years, but while most of them were fairly fast on land, they moved quite slowly when they were functio...
A.
the sidewall ACV
B.
Mountbatten Class hovercraft
C.
Cockerell’s ACV
D.
Sedam N500
【单选题】Amphibious vehicles, those that can move on both land and water, have been in use for a number of years, but while most of them were fairly fast on land, they moved quite slowly when they were functio...
A.
are moved forward by propellers
B.
travel on a cushion of air
C.
are lifted up by a flexible rubber "skirt"
D.
move faster on land than on water
【多选题】青春卡的资费规则：（）
A.
套卡激活后首月免月租，下月起正常扣取。
B.
套卡未涉及的其它资费如语音等。
C.
短/彩信等其他资费按现行标准资费执行。
D.
套餐外的语音及流量按现行资费执行（即语音按0.19元/分钟计费；流量按0.29元/MB计费，开通50元安心计划）