在进行临边作业时设置防护栏杆横杆长度大于2m时,必须加设栏杆柱。()
参考答案:对
We Chinese people are all ______ our country. [ ]
A. famous for
B. proud of
C. busy with
D. good at
决定疮疡的发展和转归的是:
A.阴阳盛衰B.疮疡病期C.发病部位D.正邪交争E.发病年龄