在包含1000个元素的线性表中实现如下各运算，哪一个所需的执行时间最短？（）
A. 线性表按顺序方式存储，查找关键码值为900的结点
B. 线性表按链接方式存储，查找关键码值为900的结点
C. 线性表按顺序方式存储，查找线性表中第900个结点
D. 线性表按链接方式存储，查找线性表中第900个结点
查看答案
活塞运动时，活塞离曲轴中心最近距离时，活塞顶所对气缸的位置为上止点。
A. 正确
B. 错误
An application is upgraded and it has been determined that the AccessAgent no longer properly responds to the application. It is understood that for a certain amount of time both the current version and the upgraded version of the application will be used by the end-users. The executables for both versions are the same. What should be the next step？（）
A. Open AccessStudio and change the existing AccessProfile to use only the new signatures for Windows， control IDs， or HTML elements.
B. Open AccessStudio and create a new AccessProfile for the upgraded version and overwrite the existing AccessProfile on the IMS Server.
C. Open AccessStudio and edit the existing AccessProfile by using new triggers/actions associated with the new signatures for Windows， control IDs， or HTML elements.
D. Open AccessStudio and create a new AccessProfile for the upgraded version and upload it to the IMS Server so that two separate AccessProfiles may be used by the AccessAgent.
煤的（）越高越有利于提高气化效率，有利于高产低耗。
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