（）的优点是适宜用于两岸地基承载力较差的情况，特别是软土的桥位。
A、辐射式斜拉桥
C、竖琴式斜拉桥
B、地锚式悬索桥
D、自锚式悬索桥
参考答案：D
Last summer I took a course on ______ poisonous gases.
A．what to deal with
B． how to deal with
C．what to be dealt with
D． how to be dealt with
简述城市污水处理厂现场监察的内容和要点？
