FA4型断路器电气控制箱“远方―就地”控制把手的作用是什么？
DOS系统中文件路径最长为（）个字符。
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（） ["the master and the chief engineer are unable to communicate effectively","serious corrosion on the hull","damaged sanitary pump","one page missing in the oil record book"]
In some parts of the world there is often a slight fall in tide during the middle of the high water period. The effect is to create a longer period of stand at higher water. This special feature is called a(n)（）. ["apogean tide","double high water","perigean tide","bore"]
寄往欧美国家的信函，信纸折叠方式通常为（）。 ["竖折","横折","横竖折","随意折"]
访问一次内存储器所花的时间称为（）。
