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【多选题】
转部分结构缺陷包括( )
A.
尖轨跟端无桥型板，尖轨跳动，轨距不易保持。
B.
尖轨尖端降低过小，实际尖端过宽，容易被轧伤，并有被车轮爬上造成不安全因素的可能。
C.
直尖轨长度过短，转辙角过大，侧向过岔速度受限制。
D.
尖轨跟端轮缘槽过窄时起护轨作用，接头容易损坏，时则转辙角增大。
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参考答案：
举一反三
【单选题】Prof. Hoffmann said that the early Americans needed to fight sort of on the ground, so they established the US Army first. Then, the second oldest branch, some would say the oldest, but the second old...
A.
the US Air Force
B.
the US Marine Corps
C.
the US Navy
D.
the US Coast Guard
查看完整题目与答案
【判断题】关于马克思主义的认识和理解，错误的有：片面的套用马克思主义、以现实为由裁剪马克思主义。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】张老师引导幼儿认识落叶时,选择在花园中让幼儿通过看摸、闻、对比等方式自主探究落叶的外形,这体现了幼儿园课程的( )。
A.
启蒙性
B.
生活性
C.
活动性
D.
游戏性
查看完整题目与答案
【单选题】听力原文： The bodies of dozens of African emigrants discovered off the Italian coast last week might have been thrown overboard, Italian officials said on Monday. A coast guard spokesman said 15 illegal e...
A.
15 of them.
B.
3 of them.
C.
100 of them.
D.
Dozens of them.
查看完整题目与答案
【判断题】家庭教育应宽严相济、张弛有度。
A.
正确
B.
错误
查看完整题目与答案
【单选题】听力原文： American coast guard officials in Florida say they have returned to Cuba a group of would-be migrants who try to make their way to the United States in an unusual vessel, a floating truck. They ...
A.
They set foot in Florida.
B.
They were drowned.
C.
They were flown to the U.S.
D.
They were sent back to Cuba.
查看完整题目与答案
【判断题】免耕播种的优点为降低生产成本、减少能耗、减轻对土壤的压实和破坏( ) 。
A.
正确
B.
错误
查看完整题目与答案
【单选题】听力原文： American Coast Guard officials in Florida say they returned to Cuba a group of would-be migrants who tried to make their way to the United States in an unusual vessel--a floating truck. They sai...
A.
They set foot in Florida.
B.
They drowned off the coast of Florida.
C.
They were taken into custody.
D.
They were sent back to Cuba.
查看完整题目与答案
【判断题】我国降水量年际变化不大,且分配均匀。
A.
正确
B.
错误
查看完整题目与答案
【判断题】张老师引导幼儿通过看、摸、对比等方式自主探究落叶的外形,而不是直接传授给幼儿有关落叶的知识,体现了幼儿园课程的活动行特点。
A.
正确
B.
错误
查看完整题目与答案
相关题目：
【单选题】Prof. Hoffmann said that the early Americans needed to fight sort of on the ground, so they established the US Army first. Then, the second oldest branch, some would say the oldest, but the second old...
A.
the US Air Force
B.
the US Marine Corps
C.
the US Navy
D.
the US Coast Guard
查看完整题目与答案
【判断题】关于马克思主义的认识和理解，错误的有：片面的套用马克思主义、以现实为由裁剪马克思主义。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】张老师引导幼儿认识落叶时,选择在花园中让幼儿通过看摸、闻、对比等方式自主探究落叶的外形,这体现了幼儿园课程的( )。
A.
启蒙性
B.
生活性
C.
活动性
D.
游戏性
查看完整题目与答案
【单选题】听力原文： The bodies of dozens of African emigrants discovered off the Italian coast last week might have been thrown overboard, Italian officials said on Monday. A coast guard spokesman said 15 illegal e...
A.
15 of them.
B.
3 of them.
C.
100 of them.
D.
Dozens of them.
查看完整题目与答案
【判断题】家庭教育应宽严相济、张弛有度。
A.
正确
B.
错误
查看完整题目与答案
【单选题】听力原文： American coast guard officials in Florida say they have returned to Cuba a group of would-be migrants who try to make their way to the United States in an unusual vessel, a floating truck. They ...
A.
They set foot in Florida.
B.
They were drowned.
C.
They were flown to the U.S.
D.
They were sent back to Cuba.
查看完整题目与答案
【判断题】免耕播种的优点为降低生产成本、减少能耗、减轻对土壤的压实和破坏( ) 。
A.
正确
B.
错误
查看完整题目与答案
【单选题】听力原文： American Coast Guard officials in Florida say they returned to Cuba a group of would-be migrants who tried to make their way to the United States in an unusual vessel--a floating truck. They sai...
A.
They set foot in Florida.
B.
They drowned off the coast of Florida.
C.
They were taken into custody.
D.
They were sent back to Cuba.
查看完整题目与答案
【判断题】我国降水量年际变化不大,且分配均匀。
A.
正确
B.
错误
查看完整题目与答案
【判断题】张老师引导幼儿通过看、摸、对比等方式自主探究落叶的外形,而不是直接传授给幼儿有关落叶的知识,体现了幼儿园课程的活动行特点。
A.
正确
B.
错误
查看完整题目与答案
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