【单选题】When using a mechanical(windup type)marine chronometer,how often should it be reset ().
A.
Only when it is overhauled
B.
Whenever the chronometer error exceeds approximately four minutes
C.
At the start of each voyage
D.
At the start of each voyage
E.
If the chronometer rate changes from gaining to losing or vice versa
【简答题】The type of hostage-taker that NY police officer cope with most often is those in ______.
【单选题】宫缩乏力性产后出血临床表现的描述 , 正确的是
【单选题】生产管理人员应该具备技术技能与行为技能,技术技能包括专业技术和( )两个方面。
【单选题】《山东省特种设备安全监察条例》规定,特种设备已做报废处理的,所有者应当自()到原注册登记的特种设备安全监督管理部门办理注销登记。
【简答题】The third type of skin cancer called melanoma is often caused by ______.
【简答题】生产管理人员应该具备技术技能与行为技能,技术技能包括()技术和()技术两个方面。