单桩竖向承载力特征值应通过（）确定。
A.单桩水平荷载试验
B.低应变
C.单桩竖向静荷载试验
D.钻芯法
参考答案：C
— I am really surprised that a policeman in his car _____ have hit several common pedestrians, killing
one and injuring three.
— Yes, If one _____ ask for trouble, what can we say?[ ]
A. would, will
B. must, may
C. should, must
D. need, dare
倾注MH平板时，培养基的厚度为（）
A.3mm
B.4mm
C.6mm
D.2mm
E.5mm
