皮皮学，免费搜题
登录
搜题
【简答题】
在光的作用下,金属或半导体材料中的电子吸收足够高的光子能量,逸出物体表面发射的现象叫做 ,也叫 。
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
【单选题】Evidence of the general consent of the international community to the existence of a rule of international law can be found in:
A.
decisions of the International Court of Justice.
B.
resolutions passed by the UN General Assembly.
C.
the conduct and practices of states in their dealings between themselves.
D.
All of the above.
E.
Both a. and c.
【单选题】Evidence of the general consent of the international community to the existence of a rule of international law can be found in:
A.
decisions of the International Court of Justice.
B.
resolutions passed by the UN General Assembly.
C.
the conduct and practices of states in their dealings between themselves.
D.
All of the above.
【单选题】设U是某关系模式的所有属性的集合,X、Y、Z都是U的子集,且Z=U-X-Y。下面关于多值依赖的叙述中,不正确的是( )。
A.
若X→→Y，则X→→Z
B.
若X→Y，则X→→Y
C.
若X→→Y，且Y' Í Y，则X→→Y'
D.
若Z＝Ф，则X→→Y
【单选题】设U是所有属性的集合，X、Y、Z都是U的子集，且Z=U—X—Y。下面关于多值依赖的叙述中，_______是不正确的。
A.
若X→→Y，则X→→Z
B.
若X→Y，则X→→Y
C.
若X→→Y，且Y’∈Y，则X→→Y’
D.
若Z=Ф， 则X→→Y
【简答题】完成3.1传统补间动画案例操作。素材可以下载049使用。
【简答题】2018年5月10 星期四 第10周--作业 完成教材P54、P55、P56、P59、P69、P267、P270-1的图形绘制, 其中图层、线型、线宽、颜色按要求区分,图形和尺寸标注正确、合理、清晰。
【单选题】The General Rule of Addition is used to compute:
A.
the probability of two or more independent events.
B.
the probability of two or more collectively exhaustive events.
C.
the probability of two events, which are not mutually exclusive.
D.
subjective probabilities.
相关题目：