皮皮学，免费搜题
登录
搜题
【判断题】
反接制动是在电动机切断交流电源后,通过立即在定子绕组的任意两相中通入直流电,使定子中产生一个恒定的静止磁场,以消耗转子惯性运转的动能来进行制动。A.
正确
B.
错误
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】The author's friend sat down at the side of the road because______.
A.
he was too tired to walk any further
B.
he had had an accident and hurt his leg
C.
he thought the lorry driver would see him clearly there
D.
he wanted to give the lorry driver a reason to stop
【单选题】I felt he was a little _____ with me. Maybe he was too tired and didn’t feel well.
A.
nervous
B.
restless
C.
uneasy
D.
impatient
【简答题】微信营销是指基于微信平台进行的营销活动,其营销主体可以是()或(),主要起到展示宣传和推广销售的作用,不受时间、空间的限制,实现()的营销
相关题目：