Jenny's family is sitting _________ a table in the restaurant. [ ]
A. at
B. on
C. in
答案:A
A.I= ,从上向下
B.I= ,从上向下
C.I= ,从下向上
D.I= ,从下向上
判断为膨胀土需要同时具备的条件是( )。
A.液限大于35%
B.液限大于40%
C.自由膨胀率大于40%
D.自由膨胀率大于35%
E.液限大于50%