Placing the switch in the test position illuminates the indicator lights, and placing the switch in the dim position dims them. In the above sentence,the first "dim" means"变暗，关掉" the second "dim" means"暗淡的" 。
A.1
正确答案是B
Placing the switch in the test position illuminates the indicator lights, and placing the switch in the dim position dims them. In the above sentence,the first "dim" means"变暗，关掉" the second "dim" means"暗淡的" 。
A.1
正确答案是B