某土层厚度H=10m,剪切波速为νs=250m/s,则该土层的特征周期Tg为()。
A.0.15s
B.0.04s
C.0.16s
D.0.20s
参考答案:C
解析:
The number of the people in Nantong ______ than ______ in Shanghai.
A.are smaller, those
B.is smaller, those
C.is smaller, that
D.are smaller, that
基托表面有不规则的大气孔的原因是
A.填胶过早B.单体挥发C.热处理时升温过快D.填胶不足E.热处理时间过长