变电运维通用管理规定中变电运维管理原则中“分级负责”具体是指哪些内容？
区域经济政策指政府（）的旨在协调、促进区域经济发展的各种法令、条例和措施。
A. 管理
B. 制定
C. 实施
确定不在同一尺寸段的两尺寸的精确程度时，应根据（）进行判断。
A. 两个尺寸的公差数值的大小
B. 两尺寸的基本偏差
C. 两尺寸的公差等级
D. 两尺寸的实际偏差
At sea，you are approaching a small vessel and see that it has the signal flag P hoisted. What should you do?（）.
A. Proceed on present course and speed since the vessel is stopped and making no way through the water
B. Keep clear of the vessel because it has a diver down
C. Attempt to call the vessel on VHF radiotelephone because someone on board requires medical assistance
D. Approach with caution because the vessel is a fishing vessel and its nets are fouled on an obstructio
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