有些车辆安装有(),当其动作后,发动机运转时间将再延长30s,以使驾驶员将车开到安全地点。
A.自动延时装置
B.手动延时按钮
C.手动处理按钮
D.自动处理按钮
参考答案:B
To our great surprise, we got _____ people to attend the conference as we expected.
A.twice as many
B.twice many
C.twice many as
D.as twice many
()时期,在南方相对安定繁荣的()形成了两个词创作的中心。