皮皮学，免费搜题
登录
搜题
【单选题】
一圆盘绕通过且垂直于盘面的水平轴转动 , 轴间摩擦不计 . 如图射来两个质量相同 , 速度大小相同 , 方向相反并在一条直线上的子弹 , 它们同时射入圆盘并且留在盘内 , 则子弹射入后的瞬间 , 圆盘和子弹系统的角动量 L 以及圆盘的角速度 ω 的变化情况为A.
L 不变 ， ω 增大
B.
两者均不变
C.
L 不变 ， ω 减小
D.
两者均不确定
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】According to the passage, what are third party screeners?
A.
Those who help detect deceptions.
B.
Those who help employ workers.
C.
Those who help glee counseling.
D.
Those who help write resumes.
【单选题】According to the passage, what are third-party screeners?
A.
Those who help detect deception.
B.
Those who help employ workers.
C.
Those who help give counseling.
D.
Those who help write resumes.
【单选题】(Paragraph 4) In the third group, only 31 percent tried to help.
A.
More people decided not to help.
B.
The third group had many people.
C.
Thirty-one percent was a big number.
【单选题】It is said that _____ of the students like to help their parents with the housework
A.
third-fifths
B.
three-fifths
C.
thirds-fifth
D.
three-fifth
【单选题】执行口头医嘱错误的选项是
A.
一般情况下不执行，手术及紧急情况下执行
B.
执行后无异常，不必记录在医嘱单上
C.
执行时护士应向医生重复一遍
D.
双方确认无误后执行
【单选题】One third of the class _____ agreed to be volunteers to help the aged this vocation.
A.
are
B.
is
C.
has
D.
have
相关题目：
参考解析：
知识点：
题目纠错 0
发布
