苯丙酸诺龙()
A.提高血液携氧量
B.刺激骨骼、肌肉生长
C.在短时间内可迅速降低体重
D.促使肌肉发达,缩短体力恢复时间
E.镇静、降血压、消除比赛前的紧张心理
参考答案:D
同一轮对抱轴径向间隙差不大于()mm。
A、0.2
B、0.25
C、0.3
D、0.35
You are on watch at sea a man falls overboard on the port side, forward near No. 1 hatch. What of the following should you do first?().
A.Call the master
B.Put the helm hard over toward the port side
C.Sound the alarm to arouse all hands
D.Stop the engines