小型站房 small passenger building
参考答案:
旅客最高聚集人数在50~400的站房。
交流换向器电动机的调速原理是()调速。
A、变频
B、弱磁
C、在电动机定子副绕组中加入可调节电势EK
D、采用定子绕组接线改变电动机极对数
(四)
Which of the following statements best describes the harm of unpunctuality
A.If you are an unpunctual person, you cannot be in charge of any important task.
B.If your friends know that you are unpunctual, they may not see you again.
C.Unpunctuality may bring about heavy losses for both public and private affairs.
D.Unpunctuality may make you miss a lot of appointments and lose friends.