分页管理每取一数据,要访问( )次内存。
使用页式内存管理,每存取一次数据要访问两次内存。……………………………( )
You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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