做含水率试验时,若盒质量19.83g,盒加湿土质量60.35g,盒加干土质量45.46g,则含水率为()
A.38.7.%
B.36.7%
C.58.1%
D.56.1%
参考答案:C
“CAI"教学是指( )
A.程序教学
B.多媒体辅助教学上课
C.计算机辅助教学
D.网络教学
We all knew from the very ______ that the plan would fail. Now you see it becomes true.
A.outbreak B.outcome C.outflow D.outset