To maintain the down stream pressure within defined limits over a range of flow and despite any changes in supply pressure, () is fitted.
为了保证船舶航行安全,首先要确定船舶的航向与位置。船舶定位方法按照参照目标可分为( )。
船舶勘绘载重线标志的目的是()。
①最大限度地利用船舶的装载能力;②保证船舶的航行安全;③保证船舶走经济航速。
下列哪些证书是《海上交通安全法》要求船舶应具备的()。
Ⅰ.客船安全证书;Ⅱ.防止油污证书;Ⅲ.船舶执照;Ⅳ.船舶国籍证书。
下列关于船舶安全检查的说法中,正确的是()。
Ⅰ、船舶接受安全检查时,陪同检查的船员引导检查人员即可
Ⅱ、船舶接受安全检查时,陪同检查的船员应按检查人员要求,调试、操纵有关设备
Ⅲ、中国籍船舶接受安全检查时出示船舶安全检查记录簿
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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