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单选题
Push the interrupt switch to stop all indications except for the red alarm LED on the smoke sensor. The alarm LED will go out when the smoke sensor no longer detects smoke.
A
Push the interrupt switch to stop all indications besides the red alarm LED on the smoke sensor. The alarm LED will light up when the smoke sensor doesn＇t detect longer smoke.
B
Push the interrupt switch to stop all indications but the red alarm LED on the smoke sensor. The alarm LED will go off when the smoke sensor detects no more smoke.
C
Push the interrupt switch to stop all displays in addition to the red alarm LED on the smoke sensor. The alarm LED will go on when the smoke sensor no longer detects smoke.
答案解析
正确答案：B
