检疫期确定是根据该传染病的（）
A.隔离期
B.最长潜伏期
C.平均潜伏期
D.最短潜伏期
E.传染期
参考答案：B
简述保险与储蓄的区别。
The MINIMUM acceptable size for a towing bridle would be that size in which the safe working load (SWL) of each leg of the bridle is equal to（）.
A.one-half the SWL of the main towing hawser
B.three-fourths the SWL of the main towing hawser
C.that of the main towing hawser
D.twice that of the main towing hawser
