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问题 单项选择题

下列设备需要每日点检的是（）.

A、电动门配电柜

B、吸风机动叶执行机构

C、主机SCS系统的测量部件

D、四管泄露监测设备

答案

参考答案：B

问答题 简答题

举例说明电子地图的应用。
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单项选择题

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．addition

B．combination

C．difference

D．condition
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