拍卖师一般根据起拍价的高低或竞买人应价的踊跃程度来确定（）。
A.拍卖节奏
B.竞价阶梯
C.落槌价
D.保留价
参考答案：B
甲状腺功能减退症最具特征的临床表现是（）
A.明显畏寒，体温低于正常
B.皮肤苍白，干燥，粗厚
C.心动过缓、心包积液
D.跟腱反射明显减退，半弛缓时间延长
E.面部虚肿
Which of the following is a characteristic of a Ro-Ro vessel（）.
A.Passenger tours available upon docking
B.Long port stays necessary to secure vehicles
C.Short in port turnaround times
D.Heavy vehicles only require lightweight securing equipment
