【判断题】【消耗次数：1】
从斜面到平面的过渡线路叫做竖曲线。
①
正确
②
错误
参考答案：
复制
纠错
相关题目
【判断题】
、双道起坡是在斜面上布置两个道岔（甩车道岔、分车道岔）形成双轨线路（斜面上形成），空、重车分别设置竖曲线。落平后的双轨存车线长度约2～3钩的串车长度，再接单开道岔联接点，变为单轨。
①
正确
②
错误
【单选题】
有两个倾角不同、高度相同、质量一样的斜面放在光滑的水平面上，斜面是光滑的，有两个一样的物块分别从这两个斜面的顶点由静止开始滑下，则（）
①
物块到达斜面底端时的动量相等
②
物块到达斜面底端时动能相等
③
物块和斜面（以及地球）组成的系统，机械能不守恒
④
物块和斜面组成的系统水平方向上动量守恒
【简答题】
空间点p（-1，2，-3）到xoy平面的距离为[填空]
随机题目
【单选题】
Be ( ) of where weve come from and the spirit of our nation.
①
prove
②
proudly
③
proud
④
prouder
【单选题】
The union plans to raise the （ ） of overtime.
①
ignorance
②
insurance
③
issue
④
ideal
【单选题】
This washing powder will work miracles on these oil ( ).
①
stains
②
stain
③
stained
④
stainless
【单选题】
He moved to Ohio in 2005 where, （ ）other things, he worked as a journalist.
①
awhile
②
amid
③
await
④
among
【单选题】
You need to （ ） to the local authority for a grant.
①
apply
②
applaud
③
appeal
④
arise
【单选题】
You should give your children more opportunities to have personal time and space to ( ) with friends or do whatever they want.
①
hang out
②
hang up
③
hang on
④
hang in
【单选题】
On this calendar you can find elective classes as well as review sessions and other events that were not part of ( ) class or exam time.
①
mandate
②
mandator
③
mandated
④
mandatory
【单选题】
The related ( ) are sufficient for you to collect the information you need for your presentation.
①
public
②
publications
③
republic
④
in public
【单选题】
Most of the runners in the London Marathon are raising money ( ).
①
in return
②
out of curiosity
③
for charity
④
on duty