单项选择题
A.436.78m-2 B.458.62m-2 C.161.77m-2 D.135.88m-2
A.不均匀系数小于等于5 B.不均匀系数小于等于6 C.不均匀系数大于5 D.不均匀系数大于6
A.75kPa B.105kPa C.150kPa D.175kPa