在Excel 2003中，关于批注的说法，正确的是（）。 ["批注在默认的状态下是自动隐藏的","已经添加的批注可以被修改","同一个批注可以同时添加给多个单元格","已经添加的批注可以被删除","批注是给单元格加的注释"]
日本临时工在总工作人口中的比率已经超过（）。 ["10%","20%","30%","40%"]
在同一驱动器之间的复制操作是（）。 ["按住Ctrl键不放用鼠标左键拖动","按住Shift键不放用鼠标左键拖动","直接用鼠标左键拖动","按住Alt键不放用鼠标左键拖动"]
网卡故障后有可能向网络发送（）的数据包。 ["一定数量","一个","不受限制","受限限制"]
The rotary motion of a diesel engine crankshaft is obtained from the up and down motion of the piston via the （）. ["camshaft","reduction gears","rocker arm","connecting or piston rod"]
简述怎样操作NK阀？
