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参考答案：
举一反三
【多选题】关于竖曲线叙述正确有（）
A.
可与缓和曲线重叠。
B.
竖曲线半径应为20000～10000m。
C.
不得侵入道岔及无碴桥梁上。
D.
Vmax≤160km/的线路，相邻坡段的坡度代数差大于2‰时，设置抛物线形竖曲线。
查看完整题目与答案
【简答题】关于道路竖曲线，正确的有() A竖曲线因坡段转折处是凸形或凹形的不同而分为凸形竖曲线和凹形竖曲线两种; B为转折角，其大小等于两相交坡段线的倾斜角之差; C值为正，变坡点在曲线上方;为负，变坡点在曲线下方; D凸形竖曲线设置的目的在于缓和纵坡转折线，保证汽车的行驶视距。
查看完整题目与答案
【多选题】关于竖曲线,正确的有( )。
A.
各级公路在纵坡变更处均应设置竖曲线
B.
四级公路在纵坡变更处可不设置竖曲线
C.
竖曲线的形式只能采用抛物线
D.
竖曲线的形式可采用抛物线或圆曲线
查看完整题目与答案
【单选题】what does "exhort" mean ? Kennedy exhorted his listeners to turn away from violence.
A.
advise
B.
tell
C.
make
D.
get
查看完整题目与答案
【单选题】听力原文： Although I think the United States generally has an excellent system of transportation, I do not think that it does a good job of transporting people between cities that are only a few hundred m...
A.
Energy conservation.
B.
Transportation of the future.
C.
Strip cities.
D.
Advantages of air transportation over railroads.
查看完整题目与答案
【简答题】导游交际语言是导游人员与游客交往时的一种语言形式, 它主要包括哪些形式?
查看完整题目与答案
【简答题】( ) 1. the result of the football match ( )2. a tag to each piece of luggage ( )3. both a house and furniture ( )4. a room with a shower for two nights ( )5. a new community center
查看完整题目与答案
【多选题】关于道路竖曲线，正确的有（）
A.
竖曲线因坡段转折处是凸形或凹形的不同而分为凸形竖曲线和凹形竖曲线两种
B.
为转折角，其大小等于两相交坡段线的倾斜角之差
C.
值为正，变坡点在曲线上方；ω为负，变坡点在曲线下方
D.
凸形竖曲线设置的目的在于缓和纵坡转折线，保证汽车的行驶视距
查看完整题目与答案
【单选题】A survey was carried on the death rate of new-born babies in that region,___ were surprising. A. as result B. which results C. over D. the results of which
A.
1
B.
2
C.
3
D.
4
查看完整题目与答案
【单选题】A survey was crried out on the death rate of new-born babies in that region, were surprising. A. as result B. which results C. over D. the results of which
A.
1
B.
2
C.
3
D.
4
查看完整题目与答案
相关题目：
【多选题】关于竖曲线叙述正确有（）
A.
可与缓和曲线重叠。
B.
竖曲线半径应为20000～10000m。
C.
不得侵入道岔及无碴桥梁上。
D.
Vmax≤160km/的线路，相邻坡段的坡度代数差大于2‰时，设置抛物线形竖曲线。
查看完整题目与答案
【简答题】关于道路竖曲线，正确的有() A竖曲线因坡段转折处是凸形或凹形的不同而分为凸形竖曲线和凹形竖曲线两种; B为转折角，其大小等于两相交坡段线的倾斜角之差; C值为正，变坡点在曲线上方;为负，变坡点在曲线下方; D凸形竖曲线设置的目的在于缓和纵坡转折线，保证汽车的行驶视距。
查看完整题目与答案
【多选题】关于竖曲线,正确的有( )。
A.
各级公路在纵坡变更处均应设置竖曲线
B.
四级公路在纵坡变更处可不设置竖曲线
C.
竖曲线的形式只能采用抛物线
D.
竖曲线的形式可采用抛物线或圆曲线
查看完整题目与答案
【单选题】what does "exhort" mean ? Kennedy exhorted his listeners to turn away from violence.
A.
advise
B.
tell
C.
make
D.
get
查看完整题目与答案
【单选题】听力原文： Although I think the United States generally has an excellent system of transportation, I do not think that it does a good job of transporting people between cities that are only a few hundred m...
A.
Energy conservation.
B.
Transportation of the future.
C.
Strip cities.
D.
Advantages of air transportation over railroads.
查看完整题目与答案
【简答题】导游交际语言是导游人员与游客交往时的一种语言形式, 它主要包括哪些形式?
查看完整题目与答案
【简答题】( ) 1. the result of the football match ( )2. a tag to each piece of luggage ( )3. both a house and furniture ( )4. a room with a shower for two nights ( )5. a new community center
查看完整题目与答案
【多选题】关于道路竖曲线，正确的有（）
A.
竖曲线因坡段转折处是凸形或凹形的不同而分为凸形竖曲线和凹形竖曲线两种
B.
为转折角，其大小等于两相交坡段线的倾斜角之差
C.
值为正，变坡点在曲线上方；ω为负，变坡点在曲线下方
D.
凸形竖曲线设置的目的在于缓和纵坡转折线，保证汽车的行驶视距
查看完整题目与答案
【单选题】A survey was carried on the death rate of new-born babies in that region,___ were surprising. A. as result B. which results C. over D. the results of which
A.
1
B.
2
C.
3
D.
4
查看完整题目与答案
【单选题】A survey was crried out on the death rate of new-born babies in that region, were surprising. A. as result B. which results C. over D. the results of which
A.
1
B.
2
C.
3
D.
4
查看完整题目与答案
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