杆吊装法整体吊装大型网架结构的施工特点是，桅杆吊装重量大、安装高度较高，吊装机具比较简单，其费用（）。
A、较低
B、较高
C、适中
参考答案：A
Nowadays, many people walk to work _____ Copenhagen Conference calling for living a low-carbon lifestyle
to cope with global warming. [ ]
A. in relation to
B. in response to
C. in addition to
D. in opposition to
检查近曲小管功能的方法有（）。
A.禁饮尿渗量
B.浓缩稀释试验
C.晨尿比重
D.一次尿渗
E.尿NAG
