【单选题】
（）directly affect the fitness and ability of a seafarer to perform watchkeeping duties.
A、Smoking
B、Drug and alcohol abuse
C、Fruit
D、Vegetables
查看正确答案A、giving B、give C、gives D、given
搜题
更多“（）directly affect the fitness and ability of a seafarer to perform watchkeeping duties.”相关的问题
第5题
A、A.IL-12分泌过多，使得Th0不能向Th1细胞分化 B、B.IL-12分泌不足，使得Th0不能向Th1细胞分化 C、C.IL-12分泌过多，使得Th0向Th2细胞分化 D、D.IL-12分泌不足，使得Th2向Th1细胞分化 E、E.IL-12分泌过多，使得Th2不能向Th1细胞分化
第7题
A、pull the unit in the same direction that the weather is pushing it B、pull the unit in the opposite direction that the weather is pushing it C、tend to keep the unit on its original location over the well head D、affect the unit's draft and inclination as maximum mooring tensions are reached
