2024M03W07 - Reading 2: Gas Central Heating

What is the best title for the passage?

• Wet system of heat transfer in conventional boilers
• Wet system of heat transfer
• Types of gas central heating
• How radiators work

It can be inferred from the passage that the function of boiler is to _____.

• heat up the room and deliver hot water
• heating up the gas used in the kitchen
• melt metal in industry
• control air ventilation

The function of a valve is to _____.

• control the flow of water
• control the temprature of boiler
• control the pressure of boiler
• switch the heater on and off

What is the function of fins in heat exchanger?

• To improve heat transfer.
• To reduce friction in hot water.
• To control the temperature.
• To provide room heating.

A "thermostat" (line 15) is _____.

• A device to control temperature.
• A device to control pressure.
• A device to switch the boiler on or off.
• A device to deliver heat.

The word "it" in line 4 refers to _____.

• water
• boilers
• gas burners
• central heating system

The word "storage" in line 5 has similar meaning with _____.

• container
• warhouse
• archive
• treasury

The word "arrangement" in line 19 can best be replaced by _____.

• system
• project
• disorder
• confusion

The word "resist" in line 13 is closest in meaning to _____.

• withstand
• reverse
• avoid
• refuse