【单选题】How many pieces of baggage does the passenger check in?
【单选题】How many pieces of clothing need to be cleaned and ironed?
【单选题】How many pieces of artwork are in the building?
【简答题】已知显示器的刷新频率(场频)为 85Hz ,分辨率为 800×600 ,显示器的行频是 ( )
【单选题】How many pieces of luggage did Mr. Parker have?
【单选题】Nearly three years of high school had gone by______ he finally realized the importance of studyinghard.
【简答题】已知显示器的刷新频率(场频)为 85Hz ,分辨率为 800×600 ,显示器的行频是__________. [计算公式:行频 = 场频 * 垂直分辨率 *1.04 ( KHZ )]