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外存和内存相比,具有容量大,速度慢,成本高,持久存储等特点。
在集装箱班轮运输中,FAK是指()。
关于听神经瘤描述错误的是()。
标称X射线管电压60KV以下的牙科摄影应大于()
()既是总资源库,又是总废物处理场。
幼儿期自我意识各方面发展的基本的规律是:3~4岁期间,儿童____发展迅速;4~5岁期间儿童的____发展迅速,而____的发展相对较平稳,趋于渐变状态。
抽样调查的特点包括( )。
《史通》
在双缝干涉实验中,若在两缝后(靠近屏一侧)各覆盖一块厚度均为d,但折射率分别为n1和n2(n2>n1)的透明薄片,从两缝发出的光在原来中央明纹处相遇时,光程差为( )。
用一个自然数去除另一个整数,商是40,余数是16。被除数、除数、商与余数的和是933,求被除数和除数各是多少?( )
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