When you doubt the existence of risk of collision,().
下列说法正确的是:()
Ⅰ、负责航行值班的高级船员是船长的代表,并在任何时候主要负责船舶的安全航行
Ⅱ、负责航行值班的高级船员应遵照《1972年国际海上避碰规则》行事
Ⅲ、船长对船舶的安全航行负总的责任
下列说法正确的是:()
Ⅰ、转换手动操舵或自动操舵必须由值班驾驶员亲自或在其监督之下进行
Ⅱ、值班驾驶员应将所有与航行安全有关的指示和信息告知驾驶台的其他值班人员
Ⅲ、只要可行和情况允许,船上的航行设备应经常在海上作操作试验
Immediately after adding a new disk to or removing an existing disk from an ASM instance, you find that the performance of the database goes down initially until the time the addition or removal process is completed, and then gradually becomes normal.
Which two activities would you perform to maintain a consistent performance of the database while adding or removing disks?()
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