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【单选题】
PLC的编程语言有很多种,该图采用的编程语言是A.
梯形图
B.
功能块图
C.
顺序功能图
D.
指令语句表
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】Dumped waste might contaminate water supplies
A.
destroy
B.
decrease
C.
delay
D.
pollute
【单选题】关于下列程序段的输出结果,说法正确的是: public class MyClass{ static int i; public static void main(Stringargv[]){ System.out.println(i); } }
A.
有错误，变量i没有初始化。
B.
1
C.
0
【单选题】Next, John Snow ______ the source of the water for these two streets and found it came from the polluted river.
A.
looked into
B.
looked up
C.
looked after
D.
looked around
【简答题】Which sign means 'Save Water'? [ ] A B C D
【单选题】The sign "Water Polluted - No Swimming Allowed" means ________.( )
A.
the water is for special use and you can't swim in it
B.
the water is not healthy to human body and no one is to swim in it
C.
the water is dirty and you can't swim in it without special permission
D.
the water is clean drinking water and you are not allowed to swim in it
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