The electric wires in a house____with some kind of insulation.
举一反三
- What’s the insulation materials between each phasor overhead<br/>lines? () A: air B: insulation cover C: insulation oil D: shield wires
- 4 your house | have | better insulation:
- After an earthquake, if you see sparks or broken or frayed wires, or if you smell hot insulation, you should look for______.
- One benefit the author mentions is that the system ______ A: uses no electricity B: has a fire-safety shutoff C: docs not pollute the air in the house D: requires less insulation in house walls
- Why is insulation required in new houses A: To limit discussion on heating bills. B: To prevent heat loss. C: To determine the temperature in homes. D: To convert homes to electric heat.