Open-feed water heater (Regeneration) has one (or more) advantages over the closed-feed from the following:Select one or more:a.No direct contact between steam and waterb.Higher water-heater effectivenessc.Less number of pumpsd.The pressure of the collected steam bleeding is preserved

Which of the following is an advantage of open system aquaculture?Water circulation can be controlled easily.Water temperature can be controlled easily.It is relatively cheap.It is easy to control pathogens in the water.

Most solar hot water systems are fitted with gas or electric "boosters" that can also heat the water.Explain why you think these are necessary.

In contrast to disposable units, reusable hydrostatic release units can be serviced and reset. What is the PRIMARY purpose of servicing a reusable hydrostatic release unit? Select your answer. To ensure the unit functions correctly and releases at the set pressure To check the compatibility with different life-saving appliances To replace worn-out bolts and fasteners To repaint the unit and improve its visibility

Which of the following is an advantage of using open-data?Choose one of the following answers.

The features of a heat pump dryer produced by Haier are given as follows, answer these two questions based on the product features.1. drying process (in terms of dryness of clothes) is an open-loop control or closed-loop control (Feedback control). (1 mark)2. Explain why it is open/closed-loop control. (1 mark. Please answer in 50 words, a correct answer with more than 50 words will get a 0.5 mark deduction) ● Heat Pump Condensing Technology.● Number of dry programs 16.● Electronic touch controls.● LED display showing remaining time.● Adjustable dryness level control.● Delay start function.● Sensor drying to prevent over or under drying.