容量为200~300MW的发电机与双绕组为单元连接时,在发电机与变压器之间应装设( )。
A.断路器; B.负荷开关; C.隔离开关; D.可拆连接点。
参考答案:D
什么是避孕方法的知情选择?
Jill and Katy ________ with their class tomorrow. [ ]
A. are going to hiking
B. are going hiking
C. go to hiking