题目:
采用塑料排水带进行软土地基处理,塑料排水带的宽度为100mm、厚度为4mm,则其当量换算直径为()mm()
A.60.6
B.66.2
C.69.2
D.72.8
答案:
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How can we protect and create a good harmonious environment ? First of all, we should use proper words, behave politely and think for others. No good society environment...