Who will succeed his property after his death? [ ]
A. in
B. at
C. to
D. from
答案:C
把同一支密度计分别浮在水、煤油和盐水中,静止时密度计受到的浮力是( )
A.在水中最大
B.在煤油中最大
C.在盐水中最大
D.一样大
商业零售业是条码应用最成熟的领域。