皮皮学，免费搜题
登录
搜题
【多选题】
船舶照明系统中断路故障表现是线路不通,灯泡不亮,常采用方法是分断电源开关,把万用表R×1 kΩ或R×10 kΩ挡,如被测电路或灯具两端电阻值为无穷大,则可判断该段线路或灯具处有断路故障。这一方法不能称为______。A.
挑担灯法
B.
对分法
C.
通电法
D.
断电法
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】— Look, that's Tom-the lost boy! — It's really great comfort to see him safe again. He is sure to bring comfort to his worried mother. [ ]
A.
a; a
B.
the; the
C.
a; /
D.
the; /
【单选题】Look before you leap! You have to ______the costs of the new system against the benefits it will bring.
A.
weigh
B.
match
C.
defend
D.
Fight
【单选题】听力原文：Interviewer: Well, today on Starting Out, we look at the sandwich industry in Britain. I have with me Brian Fraser, the owner of 'Designer Sandwiches', and Geraldine Holmes, another successful sa...
A.
His first shop was unpopular.
B.
He had to close one of the shops.
C.
His second shop didn't open on time.
【简答题】能量信号的特点?
【简答题】能量信号的特点________
【简答题】信号按信号的能量特点进行分类：
相关题目：