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搜题
【判断题】
与消费市场相比，商业市场购买者数量更少，规模更大。()A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】二元函数 ．的定义域是xOy平面上的区域( )．
A.
x 2 +y 2 ≤1，y 2 ≤4x；
B.
x 2 +y 2 ＜1，y 2 ≤4x，x 2 +y 2 ≠0；
C.
x 2 +y 2 ＜1，y 2 ＜4x；
D.
x 2 +y 2 ≤1，y 2 ＜4x，x 2 +y 2 ≠0．
【单选题】Among those which is not taxable in VAT? ( )
A.
good sales
B.
service provided by the employee to employer
C.
importation of goods
D.
service supplies with compensation
【单选题】函数 y= 2 x 2 x 2 +1 的导数是（ ）
A.
y ′ = y ′ = 4x( x 2 +1)-4 x 2 ( x 2 +1) 2
B.
y ′ = 4x( x 2 +1)-4 x 3 ( x 2 +1) 2
C.
y ′ = 4x( x 2 +1)+4 x 3 ( x 2 +1) 2
D.
y ′ = 4x( x 2 +1)-4 x ( x 2 +1) 2
【多选题】Among those which is input VAT non-deductible? ( )
A.
transportation services provided to passengers
B.
transportation services along with purchased goods which are destroyed due to poor management
C.
purchased goods which are destroyed due to poor management
D.
purchased goods which are destroyed due to natural disaster
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