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【单选题】
地效飞行器是一种利用地面效应飞行的介干飞机、舰船和气垫船间的飞行器。地效作用发生在飞行器的飞行高度___机翼长度的一半的时候。
A.
大于
B.
等于或小于
相关题库：四人赛(导入正确)
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参考答案：
举一反三
【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】对于给定重量的飞机和飞行高度的飞机，诱导阻力在（）速度下达到最大。
A.
VSO（着陆构型的失速速度）
B.
VS1（干净外型下的失速速度）
C.
VMO（允许最大的操纵限制速度）
【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
【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 hovercraft can travel with ease because there is no contact between the craft and surface below.
B.
The sidewall ACV will travel faster than the Sedam N500.
C.
A new Mountbatten Class hovercraft can carry more passengers than the Sedam N500.
D.
It takes about a half hour to travel between Britain and France by a new Mountbatten Class hovercraft.
相关题目：
【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】对于给定重量的飞机和飞行高度的飞机，诱导阻力在（）速度下达到最大。
A.
VSO（着陆构型的失速速度）
B.
VS1（干净外型下的失速速度）
C.
VMO（允许最大的操纵限制速度）
【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
【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 hovercraft can travel with ease because there is no contact between the craft and surface below.
B.
The sidewall ACV will travel faster than the Sedam N500.
C.
A new Mountbatten Class hovercraft can carry more passengers than the Sedam N500.
D.
It takes about a half hour to travel between Britain and France by a new Mountbatten Class hovercraft.
参考解析：
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