皮皮学,免费搜题
登录
搜题
【单选题】
一束自然光自空气射向一块平板玻璃(如图),设入射角等于特角i0,则在界面2的反射光( )。
A.
是自然光
B.
是完全偏振光且光矢量的振动方向垂直于入射面
C.
是完全偏振光且光矢量的振动方向平行于入射面
D.
是部分偏振光
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【判断题】支付结算是一种要式行为。所谓要式行为是指法律规定必须按照一定形式进行的行为。所以,未使用中国人民银行统一规定格式的结算凭证,银行不予受理。( )
A.
正确
B.
错误
【单选题】Why did Danny's parents make him go visit his grandparents?
A.
To play with his grandparents’ dog in the yard.
B.
To tell his grandparents about sports and school.
C.
To teach his grandparents how to use technology.
D.
To have a close relationship with his grandparents.
【简答题】有关弹簧测力计,下列说法正确的是( ) A .弹簧测力计的弹簧越长,所受的拉力一定越大 B .只要弹簧不断,弹簧测力计可以测任何大小的力 C .弹簧测力计可以直接测量物体的质量 D .在量程范围内,弹簧伸长越多,表示弹簧受到的拉力越大
【单选题】Why was Danny shocked after his grandparents died?
A.
Because his grandparents didn’t teach him anything. B)
B.
Because his grandparents had a secret he didn’t know.
C.
Because his grandfather was good at writing a report.
D.
Because his grandfather’s life had been very interesting.
【简答题】(易混题)用天平和弹簧测力计分别在地球和月球上测量同一物体的质量和重量.测量结果是 [ ] A. 天平、弹簧测力计测量的结果都不同 B. 天平、弹簧测力计测量的结果都相同 C. 天平测量的结果不同,弹簧测力计测量的结果相同 D. 天平测量的结果相同,弹簧测力计测量的结果不同
【单选题】以下属于免费流量的是( )。
A.
淘宝客
B.
自然搜索
C.
直通车
D.
钻石展位
【单选题】Why was Danny shocked after his grandparents died?
A.
Because his grandparents didn’t teach him anything.
B.
Because his grandparents had a secret he didn’t know.
C.
Because his grandfather's life had been very interesting.
D.
Because his grandfather was good at writing a report.
【单选题】Why did Sanny's parents make him go visit his grandparents?
A.
To play with his grandparents’ dog in the yard.
B.
To tell his grandparents about sports and school.
C.
To have a close relationship with his grandparents.
D.
To teach his grandparents how to use technology.
【判断题】所谓要式行为是指法律规定必须按照一定形式进行的行为。( )
A.
正确
B.
错误
【单选题】Did you _____________ your grandparents? [     ]
A.
visit
B.
visits
C.
visited
相关题目: