皮皮学，免费搜题
登录
搜题
【单选题】
三相对称负载的白炽灯泡作三角形连接,接到三相对称电源上,正常工作时,突然电源线有一根线断,其结果是A.
两正常亮，一灭
B.
两正常亮，一较暗
C.
两较暗，一正常亮
D.
三相全变暗
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】Name the logic gate that is formed by this circuit.
A.
positive logic OR gate
B.
positive logic AND gate
C.
negative logic OR gate
D.
negative logic AND gate
【单选题】Name the logic gate that is formed by this circuit. ______【图片】
A.
positive logic OR gate
B.
positive logic AND gate
C.
negative logic OR gate
D.
negative logic AND gate
【单选题】Which logic gate is Not gate?
A.
The output of a NOT gate is the opposite of the input.
B.
When all inputs are high(logic 1), the output is high, otherwise the output is low(logic 0).
C.
As long as one of the inputs is high (logic 1), the output is high(logic 1); Only when all inputs are low, the output is low.
D.
If the input is high,the output is also high.
相关题目：