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【简答题】
Today people can use the phone to talk with others almost anywhere on the earth. But when you use the phone, you don’t see the person you are talking with. This may change in the near future. Today some people are using a kind of telephone called the picture phone or vision phone. With it , two people who are talking can see each other. Picture phones can be useful when you have something to show to the person you’re calling. They may have other uses in the future. One day you may be able to ring up a library and ask to read a book. Then you’ll be able to read the book right over your picture phone. Or you may be able to go shopping through your picture phone. If you want to buy something in the newspaper, you’ll use your phone and call the shop. People at the shop will show you the thing you’re interested in right over the phone. You’ll be able to shop all over town and never even leave your room! 小题1:Today people can use the phone to talk with others ______. A.in all the towns B.in some places in the world C.only in big cities D.almost anywhere on the earth 小题2:The underlined word “it” in the passage means ______. A.the picture phone B.any phone C.the use D.the change 小题3:We can ______ through the picture phone according to the text. A.write a book B.do shopping C.play games D.have classes 小题4:Picture phones can be used for ______. A.ringing up a library to see a book B.going shopping without leaving our homes C.showing the person we’re talking with something D.All of the above. 小题5:The title of the article can be “______”. A.The telephones B.Picture phones C.Shopping on the phone D.Talking on the phone
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【单选题】急型心肌梗死所致的室速或是室颤最好选用
A.
苯妥英钠
B.
利多卡因
C.
普罗帕酮
D.
普萘洛尔
E.
奎尼丁
【单选题】当锅炉内的温度等于该压力对应饱和温度时,锅炉内可能为 ______ 。
A.
饱和水蒸气
B.
饱和水
C.
湿蒸汽
D.
“ 饱和水蒸气 ”或“ 饱和水 ”或“ 湿蒸汽 ”
【单选题】菠萝酯(C 11 H 12 O 3 )学名苯氧乙酸烯丙酯,是一种无色透明的液体,因其具有强烈的新鲜天然的菠萝清香而得名,密度比水略小,不溶于水,易溶于乙醇、氯仿等有机溶剂。广泛应用于饮料、糖果、食用香精等食品工业,也用干化妆品工业和医药工业中。食品香精菠萝酯的生产路线(反应条件略去)如下:下列叙述错误的是 [     ]
A.
苯酚和菠萝酯均可与酸性KMnO 4 溶液发生反应
B.
Cl-CH 2 COOH既能发生中和反应、取代反应,又能发生消去反应
C.
苯氧乙酸和菠萝酯均可与NaOH溶液发生反应
D.
步骤(1)产物中残留的苯酚可用FeCl 3 溶液检验
【简答题】苯乙烯又名( ),( )溶于水能溶于( )等溶剂。苯乙烯蒸汽与空气能形成( )。
【简答题】酮体合成的酶系存在 ,氧化利用的酶系存在于 。
【单选题】单选题-使用苯妥英钠时错误的是
A.
饭后服药
B.
不作肌注,应稀释后静注
C.
出现严重不良反应,应立即停药
D.
告诉病人应经常按摩牙龈
E.
注意观察过敏反应的发生
【简答题】当锅炉内的温度等于该压力对应饱和温度时,锅炉内可能为 ()。A. 饱和水蒸气 B. 饱和水 C. 湿蒸汽 D. A或B或C
【单选题】当锅炉内的温度等于该压力对应的饱和温度时,锅炉内可能是( )
A.
饱和水蒸汽
B.
饱和水
C.
湿蒸汽
D.
A或B或C
【简答题】酮体合成的酶系存在于 ,氧化利用的酶系存在于 。
【单选题】急型心肌梗死所致的室速或是室颤最好选用
A.
苯妥英钠
B.
利多卡因
C.
普罗帕酮
D.
普萘洛尔
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