问题
选择题
The light is still on. He --- out.
A．can’t have gone
B．mustn’t have gone
C．have to
D．ought have gone
答案
答案：A
搜题请搜索小程序“爱下问搜题”
The light is still on. He --- out.
A．can’t have gone
B．mustn’t have gone
C．have to
D．ought have gone
答案：A
某一黄土场地进行初步勘察，在一探井中取样进行湿陷性试验，结果见表。试计算黄土的总湿陷量△s(β0＝0.5，不考虑地质分层)。
题1-96表
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