单项选择题
A.42U,48U B.36U,42U,48U C.22U,36U,42U,48U D.14U,22U,42U,47U,48U
A.FlexLOM B.Flex-10 C.Flex-20 D.FlexFabric
A.2000lbs(907kg) B.2800lbs(1270kg) C.3000lbs(1361kg) D.3600lbs(1633kg)