1) 氧氣屬於哪一個危險警告標籤?Which hazard warning label does oxygen fall under? a) 易燃 Flammable b) 助燃 Oxidizing c) 爆炸性 explosive 2) 聲音是通過介質的_____來傳播。Sound is transmitted through the _____ of the medium. a) 地心吸力 Gravity b) 摩擦力 Friction c) 震動 Vibration 3) 以下哪項是可以測試pH值?Which of the following choices can test pH value? a) pH試紙 pH paper b) 石蕊試紙 Litmus paper c) 過濾紙 Filter paper 4) 以下哪項是一部電壓表的用途?Which of the following choices is the function of a voltmeter? a) 測量電壓 Measure voltage b) 測量電流 Measure current c) 測量聲級 Measure sound level 5) 以下哪項是消化系統的用途?Which of the following choices is the function of digestive system ? a) 沒有功能 No function b) 減輕壓力 Relieve stress c) 消化 Digestion

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