题干

某有机物1.6g在足量的氧气中充分燃烧后,生成两种产物.将所得的产物全部依次通过盛有足量浓硫酸的甲装置(吸收水分)和盛有足量石灰水的乙装置(吸收二氧化碳),经测定甲装置增重1.8g,乙装置增重2.2g.则下列结论正确的是(  )


A:该有机物只含有C、H两种元素

B:该有机物一定含有C、H元素,可能含有O元素

C:该有机物一定含有C、H、O三种元素

D:该反应不符合质量恒定律

上一题 下一题 0.0难度 选择题 更新时间:2019-09-12 12:55:00

答案(点此获取答案解析)

C

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根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项

    Save Your Time, Money and Stress with Savvy (懂行,悟性)Rental Car Strategies

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    Do you really need a rental car from the airport? For instance, if your flight arrives at night, take a free hotel shuttle and pick up your car the next day. The car rental location might even be at your hotel or can pick you up (or deliver the car to you).____

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    Major car rental companies might have an associated discount brand at your rental location, like Firefly for Hertz.____ 

    An independent or smaller local agency may fit your needs; like A1 or Lucky Owl in Honolulu. Many people prefer to check rates on Hotwire and Priceline, especially for last-minute rentals.

A.Rental rates are likely lower away from the airport, plus you might save the cost of an entire rental day.

B.I use discount-finding websites to track my car reservations.

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F.Skip the Car

G.Use a bike