HTTP请求头，即Request headers中的Cache-control参数指（ ）。

以下哪些是强制缓存？（） A: If-Match B: If-None-Match C: Expires D: Cache-Control

Control (英文)______ and you control nations; control (英文)______ and you control the (英文)______ ; control (英文)______ and you control the world——Henry (英文)______

Closed-loop control system is an automatic control system. Open-loop control system is not an automatic control system.

Important branches of intelligent control do not include A: expert control B: neural network control C: fuzzy control D: adaptive control

The one which does not belong to intelligent control is A: neural network control B: expert control C: fuzzy control D: deterministic feedback control

According to the characteristics of the control system, CNC machine tools can be divided into ( ),( ) and contour control machine tools. A: Point to Point Control B: open-loop control C: line motion control D: closed-loop control

There was nothing they could do about it. The situation was out of control. A: in control B: in the control C: out control D: out of control

Her car ran ____ and hit a tree. A: out control B: under control C: out of control D: far from control

当进行数据写操作时Cache未命中，根据Cache执行的操作不同，将Cache分为两类（） A: 数据Cache和指令Cache B: 统一Cache和独立Cache C: 写通Cache和写回Cache D: 读操作分配Cache和写操作分配Cache