皮皮学,免费搜题
登录
搜题
【简答题】
(1)以下哪一项是接入控制的核心任务( )。
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】在一电压恒定的直流电路中,电阻值增大时,电流()
A.
不变
B.
增大
C.
减小
D.
变化不定
【单选题】ZD6-D型转辙机采用直流串激式电动机,它的 额定电流为 ( ) 。
A.
2A
B.
3A
C.
4A
D.
5A
【单选题】听力原文: Prison service staff here in Britain has been severely criticized in an official report for escape of five Iraqi prisoners and an armed robber from Whitewall Prison in Kenbershire. Bomb-making e...
A.
6
B.
5
C.
1
D.
7
【单选题】National Health Service in Britain is only free for _________.
A.
the British people
B.
the British students
C.
overseas students
D.
the British adults
【多选题】《饲料和饲料添加剂管理条例》中,把饲料分为( )。
A.
单一饲料
B.
浓缩饲料
C.
配合饲料
D.
添加剂预混合饲料
E.
精料补充料
【单选题】---I’m going to Britain? ---How long _________ you _______ in Britain?
A.
did; stay
B.
are; staying
C.
have; stayed
D.
are; stayed
【单选题】听力原文:Thank you for calling the Britain information service. If you'd like information about train times, please press 1. If you' d like to book a ticket, please press 2. If you want information about ...
A.
An engineering company
B.
A telephone company
C.
A railway company
D.
A cinema
【简答题】Unlike Britain, the US does not have a national health care service. Most people buy medical insurance to help pay for medical care. The government only helps pay for some medical care for the old and...
【单选题】在一电压恒定的直流电路中,电阻值增大时,电流( )。
A.
减小
B.
增大
C.
不变
D.
变化不定
【多选题】下列属于ZD6型电动转辙机的技术参数的是()。
A.
额定电压160VDC
B.
工作电流小于2A
C.
摩擦电流2.3-2.9A
D.
额定电压220VAC
相关题目: