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【单选题】
变速器档位数增多,则( )A.
动力性提高，经济性提高
B.
动力性下降，经济性下降
C.
动力性提高，经济性下降
D.
动力性下降，经济性提高
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反馈参考答案：
举一反三
【简答题】(2-6)利用逻辑运算符将逻辑值连接的有意义式子是( )表达式,它的值是( )类型 .
【简答题】利用逻辑运算符将逻辑值连接的式子是( )表达式,它的值是( )型 .
【单选题】The (three-fields) system is an agricultural method in which one field (out of) (three) is (left) to lie fallow while the other two fields are being cultivated.
A.
three-fields
B.
out of
C.
three
D.
left
【简答题】It is football time again．Currently, the qualifying rounds are being played to decide which countries will send teams to the next World Cup．Some Soccer is becoming more and more popular on a worldwide...
【简答题】（10分）A～H等8种物质存在如下转化关系(反应条件、部分产物未标出)。已知A是正盐，B是能使品红溶液褪色的气体，G是红棕色气体。按要求回答问题： （1）写出下列物质的化学式：A ，B 。 （2）写出下列反应的化学方程式：E→F ； 写出下列反应的离子方程式：A→E ； H的浓溶液与木炭反应的化学方程式： 。 （3）检验某溶液中是否含D中阴离子的方法是 。
【简答题】Consider the three bonds in the following table. Which of the three bonds is most likely to have the greatest reinvestment risk? A. Bond A B. Bond B C. Bond C
【单选题】Which of the following three sentences does not belong to the three events that led to the bullion wine binge?
A.
The Bank of England's gold auction went better than anticipated
B.
IMF confirmed it cancelled plans to sell 10 million ounces of its gold reserves
C.
Global economy boomed
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