问题
问答题
设∑为坐标面及平面x=1，y=1，z=1所围成的正方体表面的外侧，计算曲面积分．
答案
参考答案：
解析：设Ω：0≤x≤1，0≤y≤1，0≤z≤1 由高斯公式得
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设∑为坐标面及平面x=1，y=1，z=1所围成的正方体表面的外侧，计算曲面积分．
参考答案：
解析：设Ω：0≤x≤1，0≤y≤1，0≤z≤1 由高斯公式得
| 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. |
(2)
A．earth
B．bottom
C．table
D．surface