下列()属于非挤土桩。()
A.锤击或振动沉管灌注桩
B.冲击成孔灌注桩
C.顶钻孔打入预制桩
D.钻孔灌注桩
参考答案:D
The weather here in spring is much similar to _______ in my hometown. [ ]
A. one
B. it
C. that
D. this
有机物分子中最多有多少个原子共面 [ ]
A.12
B.16
C.20
D.24