皮皮学，免费搜题
登录
搜题
【单选题】
—Oh, no! We have missed the train. What should we do? —I’m afraid we have no but to wait for another one.A.
decision
B.
information
C.
reason
D.
choice
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】以下程序运行结果为: public class Q { public static void main(String argv[]) { int anar[]= new int[5]; System.out.println(anar[0]); } }
A.
出错: anar在未初始化前被引用
B.
"null"
C.
0
D.
5
【简答题】请读懂下述程序的作用,并在空格处填上正确的代码:LED = 0KEY = 3gpio.mode(LED, gpio.OUTPUT)gpio.mode(KEY, gpio.INPUT, gpio.PULLUP)If gpio.LOW == gpio.read(Key) _ gpio.write(LED, gpio.HIGH)_ gpio.write(LED, gpio.LOW)_
【简答题】请读懂下述程序的作用,并在空格处填上正确的代码:LED = 0Key = 3gpio.mode(LED, gpio.OUTPUT)_(Key, gpio.INPUT, gpio.PULLUP)If gpio.LOW == gpio.read(Key) then _(LED, gpio.HIGH)else _(LED, gpio.LOW)end
【简答题】请读懂下述程序的作用,并在空格处填上正确的代码:LED = _gpio.mode(LED, _)gpio.write(LED, _)
【简答题】请读懂下述程序的作用,并在空格处填上正确的代码:LED = 0KEY = 3gpio.mode(LED, gpio.OUTPUT)gpio.mode(KEY, gpio.INPUT, _)If gpio.LOW == gpio.read(_) then gpio.write(LED, _)else gpio.write(LED, gpio.LOW)end
【单选题】以下程序运行结果为: public class Q { public static void main(String argv[]) { int anar[]= new int[5]; System.out.println(anar[0]); } }
A.
出错: anar在未初始化前被引用;
B.
0
C.
5
【简答题】请读懂下述程序的作用,并在空格处填上正确的代码:LED = 0KEY = 3gpio.mode(LED, gpio.OUTPUT)gpio.mode(KEY, gpio.INPUT, gpio.PULLUP)while __ do if gpio.LOW == gpio.read(KEY) then gpio.write(LED, gpio.HIGH) else gpio.write(LED...
【简答题】请读懂下述程序的作用,并在空格处填上正确的代码:LED = 0KEY = 3gpio.mode(LED, gpio.OUTPUT)gpio.mode(KEY, gpio.INPUT, gpio.PULLUP)while 1 do __ if gpio.LOW == gpio.read(KEY) then gpio.write(LED, gpio.HIGH) else gpio.write(L...
【简答题】请读懂下述程序的作用,并在空格处填上正确的代码:LED = 0KEY = 3gpio.mode(LED, gpio.OUTPUT)gpio.mode(KEY, gpio.INPUT, gpio.PULLUP)while 1 do gpio.write(LED, gpio.read(KEY) ) __end
【单选题】以下程序运行结果为? public class Q { public static void main(String argv[]) { String a[]= new String[5]; System.out.println(a[0]); } }
A.
编译出错: a在未初始化前被引用;
B.
0
C.
null
D.
5
相关题目：