【简答题】如果一个Java Applet源程序文件只定义有一个类,该类的类名为MyApplet,则类MyApplet必须是______类的子类并且存储该源程序文件的文件名为______。
【单选题】The main point of this text is that ______.
A.
pesticides are dangerous and their uses need to be reevaluated
B.
children suffer most from the effects of pesticides
C.
schools are most responsible for pesticide-related illnesses
D.
pesticides should be eliminated everywhere
【简答题】The author uses the examples in the passage to illustrate his point that ________. A) it’s extremely difficult to consider all the important elements in problem B) success in medical research has its ...
【简答题】如果一个Java Applet源程序文件只定义有一个类,该类的类名为MyApplet,则类 MyApplet必须是Applet类的子类并且存储该源程序文件的文件名必须为【 】。
【单选题】( 33 ) 创建一个名为 student 的新类 , 保存新类的类库名称是 mylib, 新类的 父 类是 P erson, 正确的命令是 A ) CREATE CLASS mylib OF student A s P erson
B.
) CREATE CLASS student OF P erson A s mylib
C.
) CREATE CLASS student OF mylib A s P erson
【简答题】已建立一个名为teacher的类,保存该类的类库名称是mylib,则删除该类正确的命令是( )。
【判断题】西汉王朝在河西走廊设立了武威、张掖、酒泉和敦煌四郡。
【判断题】西汉王朝在河西走廊设立了武威、张掖、酒泉和敦煌四郡。()