题目内容

An actual result is analysed in relation to a plan or standard.Which element of a feedback system performs this role?

A. Effector
B. High-level controller
Comparator
D. Sensor

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Rohan works as a supervisor in the operations function of an organisation, Last month he received a number of negative variances from a member of the management accounting team and put in place controls to prevent them happenin again.In terms of a feedback system, Rohan works as:

A higher-level controller
B. A comparator
C. A sensor
D. An effector

乘积法的条件之一是非稳态导热发生的初始温度恒定。

A. 对
B. 错

一个短矩形体可以看成是三个无限大平板垂直相交截下的图形，其三维非稳态导热问题分析解是直角座标系中的三个方向的无限大平板的解的乘积。

A. 对
B. 错

篮球和排球的场地线宽是相同的。

A. 对
B. 错