【单选题】关于 Python中的复数,下列说法错误的是( )
【单选题】发给来中国旅游、探亲或处理其他私人事务入境的外国人的签证是 ( ) 。
【单选题】关于Python中的复数,下列说法错误的是:
A.
表示复数的语法是real + image j
D.
复数类型表示数学中的复数,可以看作是二元有序数。
【单选题】The Chinese agricultural tax wasn’t completely abolished______2006, which reduced the farmers’ burden greatly.
【单选题】发给来中国旅游、探亲或处理其他私人事务入境的外国人的签证是( )。
【单选题】Average tariff levels in the United States in the last decade are
A.
about equal to the average since 1930.
B.
above the average since 1930.
C.
positive, but below the average since 1930.
D.
zero, as there are no longer any tariffs in the United States.
【单选题】When ataxon agoodisenacted,
A.
buyer s an d seller s shar e th e burde n o f th e ta x regardles s o f whethe r th e ta x i s levie d o n buyer s o r o n sellers.
B.
buyer s alway s bea r th e ful l burde n o f th e tax.
C.
seller s alway s bea r th e ful l burde n o f th e tax.
D.
seller s bea r th e ful l burde n o f th e ta x i f th e ta x i s levie d o n them ; buyer s bea r th e ful l burde n o f th e ta x i f the ta x i s levie d o n them.
【判断题】C1. Average Tariff Rates on products remain very much the same from 1950s to 2000 globally.
【多选题】下面有关图线说法正确的是:
A.
在机械图样中采用粗、细两种线宽,它们之间的比例为2:1。
B.
在绘制机械图样时,粗实线的宽度b据图形的大小和复杂程度而定。
C.
图形小且复杂时b应取小些;图形大且简单时b应取大些。