第6题: [单项选择]单击窗体上的关闭按钮时,触发的事件是( )。 A. TextField b = new TextField("关闭"); B. TextArea b = new TextArea("关闭"); C. BuRon b = new Button("关闭"); D. Checkbox b = new Checkbox("关闭"); 参考答案:C 答案解析:短整型的数据类型的长度是16 bit,有符号,范围是-32768~+32767。 beyt类型有8位bit,数据范围是-128~+127。int类型占32位bit,范围是-2147483648~+24
第23题: [单项选择]Holland has two-thirds the inhabitants of the state of New York, ______ Holland. A. that size is four times of B. that is four times the size of C. which size is four times of D. which is four times the size of 参考答案:D 答案解析:[解析] 倍数表达题。根据句式结构可知,后接一个非限制性定语从句,应使用which,倍数表达的结构为“A+be+倍数+the+计量名词+of+B”,故本题选D。