If at any time the officer in charge of the navigational watch is to be relieved when a manoeuvre or other action to avoid any hazard is taking place,().
A. the relief of that officer shall be made prior to such action has been completed
B. the relief of that officer shall never be made
C. the relief of that officer shall be deferred until such action has been completed
D. the relief of that officer shall be made by the captai
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()不到位禁止施工。
A. 施工负责人
B. 监控人员
C. 配合人员
D. 驻站联络员
E. 安全防护员
若双眼验光试片的焦量不平衡,导致双眼需要不等量的调节和集合,则可能发生视疲劳。
A. 正确
B. 错误