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【简答题】
对某近视力表,其标准检查距离为30cm,现置于25cm处只能看到0.8视力,则该眼的近视力为 。
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【单选题】柴油机在运行中一旦发生连杆螺栓断裂则可能导致______损坏 I.活塞、连杆;II.缸套;III.机架;IV.曲轴
A.
Ⅰ+Ⅲ+Ⅳ
B.
Ⅰ+Ⅱ+Ⅲ+Ⅳ
C.
Ⅰ+Ⅱ+Ⅳ
D.
Ⅱ+Ⅲ
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【单选题】Linda works hard, and ____. [ ]
A.
so does her brother
B.
so did her brother
C.
her brother do so
D.
her brother did so
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【单选题】Last year, Susan earned ______ her brother, though her brother has a better position.
A.
twice as much as
B.
twice as many as
C.
twice than
D.
twice as more as
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【简答题】定义在R上的函数f(x),其图象是连续不断的,如果存在非零常数λ(λ∈R,使得对任意的x∈R,都有f(x+λ)=λf(x),则称y=f(x)为“倍增函数”,λ为“倍增系数”,下列命题为真命题的是______(写出所有真命题对应的序号). ①若函数y=f(x)是倍增系数λ=-2的倍增函数,则y=f(x)至少有1个零点; ②函数f(x)=2x+1是倍增函数,且倍增系数λ=1; ③函数 f(x)= e ...
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【判断题】如果 函数 f(x) 在 x0 点连续,则 f(x) 在 x0 点的任何邻域内有界。 ( )
A.
正确
B.
错误
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【判断题】如果函数f(x)在点x0连续,则有 。( )
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正确
B.
错误
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【简答题】Mary is writing a letter to her brother in her bedroom.转化为被动语态表述是 A letter by Mary to her brother in her bedroom.
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【判断题】拉格朗日中值定理的内容是:如果函数f(x)在[a,b]上连续,在(a,b)内可导,则在(a,b)内至少有一点 ,使得函数f(x)在这一点的导数为0.
A.
正确
B.
错误
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【简答题】句型转换。 1. Her brother has a ball. (改为一般疑问句) _____ her brother _____ a ball? 2. My sister has a computer . (改为否定句) My sister _____ _____ a computer . 3. Ann has a nice tennis racket . (对画线部分提问) ...
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相关题目:
【单选题】柴油机在运行中一旦发生连杆螺栓断裂则可能导致______损坏 I.活塞、连杆;II.缸套;III.机架;IV.曲轴
A.
Ⅰ+Ⅲ+Ⅳ
B.
Ⅰ+Ⅱ+Ⅲ+Ⅳ
C.
Ⅰ+Ⅱ+Ⅳ
D.
Ⅱ+Ⅲ
查看完整题目与答案
【简答题】A.Her father. B.Her mother. C.Her brother, D.Her sister.
查看完整题目与答案
【单选题】Linda works hard, and ____. [ ]
A.
so does her brother
B.
so did her brother
C.
her brother do so
D.
her brother did so
查看完整题目与答案
【单选题】Last year, Susan earned ______ her brother, though her brother has a better position.
A.
twice as much as
B.
twice as many as
C.
twice than
D.
twice as more as
查看完整题目与答案
【简答题】定义在R上的函数f(x),其图象是连续不断的,如果存在非零常数λ(λ∈R,使得对任意的x∈R,都有f(x+λ)=λf(x),则称y=f(x)为“倍增函数”,λ为“倍增系数”,下列命题为真命题的是______(写出所有真命题对应的序号). ①若函数y=f(x)是倍增系数λ=-2的倍增函数,则y=f(x)至少有1个零点; ②函数f(x)=2x+1是倍增函数,且倍增系数λ=1; ③函数 f(x)= e ...
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【判断题】如果 函数 f(x) 在 x0 点连续,则 f(x) 在 x0 点的任何邻域内有界。 ( )
A.
正确
B.
错误
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A.
正确
B.
错误
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【简答题】Mary is writing a letter to her brother in her bedroom.转化为被动语态表述是 A letter by Mary to her brother in her bedroom.
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【判断题】拉格朗日中值定理的内容是:如果函数f(x)在[a,b]上连续,在(a,b)内可导,则在(a,b)内至少有一点 ,使得函数f(x)在这一点的导数为0.
A.
正确
B.
错误
查看完整题目与答案
【简答题】句型转换。 1. Her brother has a ball. (改为一般疑问句) _____ her brother _____ a ball? 2. My sister has a computer . (改为否定句) My sister _____ _____ a computer . 3. Ann has a nice tennis racket . (对画线部分提问) ...
查看完整题目与答案