问题
解答题
桌子42.8元/张，椅子12.2元/把．实验小学购进300套课桌椅，一共需要多少钱？
答案
（42.8+12.2）×300，
=55×300，
=16500（元）；
答：一共需要16500元钱．
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桌子42.8元/张，椅子12.2元/把．实验小学购进300套课桌椅，一共需要多少钱？
（42.8+12.2）×300，
=55×300，
=16500（元）；
答：一共需要16500元钱．
| 35．Applications put computers to pratical business (1) , but below the (2) it’s the heart of an operating system—the kernel that provides the technical wizardry to juggle multiple program, connect to networks and store (3) . A traditional kernal provides all the functions for applications. The kemal (4) memory, I/O devices and parcels out processor time. The kernel also supports security and fault (5) , which is the ablity to recover automatically when parts of the system fail. |
(5)
A．management
B．planning
C．production
D．research