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问题 解答题

水果店运来苹果420千克，每25千克装一箱，装了一些后还剩下20千克．问装了多少箱？（用方程解答）

答案

设装了x箱，则一共装了25x千克，根据题意可得方程：

25x+20=420，

25x=400，

x=16，

答：装了16箱．

单项选择题

One of the functions of the (71) is to store the applications programs or the various secondaries. The (72) may have similar or dissimilar functions. The same control code received from two different, secondaries may warrant two different actions on the part of the host computer. If the system so requires, the host computer must also provide (73) for the centralized data and the software for database management. Data information is normally stored in auxiliary memories to which the computer has ready access. The (74) peripherals connected to the host computer allow for human entry and intervention. As needs change, application programs may require additions, deletions, or changes. Data link problems also arise which are (75) the range of the computer’s programmed capabilities. In such cases, human entry is required to make the necessary changes to resolve the existing problems.

A．storage

B．data

C．range

D．link
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单项选择题

电子验印系统操作员分为建库操作员和（）。

A.档案管理员

B.验印操作员

C.建库管理员

D.验印管理员
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