In terms of vessel manning，a watch is the（）.
A. direct performance of deck or engine operations in a scheduled and fixed rotation
B. performance of maintenance work necessary for the vessel's safe operation，on a daily basis
C. performance of lookout duties
D. direct performance of cargo loading and discharge operations only
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足月男婴，出生8小时即出现身黄、目黄，哭闹不安，呕吐，尿黄稍伴发热，舌质红，苔黄稍腻，指纹紫滞。其治宜选用（）
A. 茵陈理中汤加减
B. 茵陈蒿汤加减
C. 膈下逐瘀汤加减
D. 羚角钩藤汤合茵陈蒿汤
E. 黄连解毒汤加减
考虑到汽轮机是高速运转机械，处于高温高压之中，针对这一点对汽轮机油的要求是（）Ⅰ、防腐防锈性能好Ⅱ、抗氧化安定性能好Ⅲ、抗乳化性能好
A. 仅仅是Ⅰ
B. 仅仅是Ⅱ
C. Ⅰ+Ⅱ
D. Ⅱ+Ⅲ
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