Have ____________, please.[ ]
A. a chicken
B. some chicken
C. chickens
D. an chicken
答案:B
在基坑边缘上侧堆土或材料以及移动施工机械时,应与基坑边缘保持()m以上距离。
A.0.3
B.0.5
C.1
D.2
成熟卵泡直径为()
A.8~10mm
B.10~15mm
C.12~18mm
D.18~25mm
E.22~30mm