Flow control is one of the basic functions of the data link layer. Regarding flow control, which one is correct among following statements? A: Only the data link layer has flow control B: Not only the data link layer has flow control, but the flow control objects of each layer are the same C: Not only does the data link layer have flow control, but the flow control objects of each layer are different D: None of the above is right

Power control unit: controls the flow of electricity;

Which of the following layer oversees both error control & flow control at the source to destination level?

How does nonverbal behavior control the pace or flow of communication?

Which three flow-control port states lead to enabled link flow control？ （） A:  Receive port： Enabled， Transmit port： Enabled B:  Receive port： Enabled， Transmit port： Desired C:  Receive port： Enabled， Transmit port： Disabled D:  Receive port： Disabled， Transmit port： Desired E:  Receive port： Desired， Transmit port： Desired

In hydraulic transmission, the hydraulic control valve used to control the pressure, flow and direction of liquid is ( ). A: Power plant B: control unit C: auxiliary device D: Actuator

A throttle valve is a simple flow control valve, a throttle valve is virtually equal to( ).

What is the function of a backing plate? A: To control the flow of brake fluid. B: To hold the braking system together. C: To control the brake pads.

算法工程保存在（）文件夹 A: FLOW B: REPORT C: CONTROL D: TREND

Which of the following is the correct signal flow for an analog multi-room audio system？（） A: Source，Volume Control，Speaker，Amp B: Source，Amp，Volume Control，Speaker C: Amp，Source，Volume Control，Speaker D: Speaker，Amp，Volume Control，Source