问题
单项选择题
Conventional anchors are least likely to hold in a bottom consisting of（）.
A.soft clay
B.hard mud
C.very soft mud
D.sand
答案
参考答案：C
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Conventional anchors are least likely to hold in a bottom consisting of（）.
A.soft clay
B.hard mud
C.very soft mud
D.sand
参考答案：C