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【多选题】
用重量法测定 SO42-含量，BaSO4沉淀中有少量Fe2(SO4)3，则对结果的影响为( )。A.
正误差
B.
负误差
C.
对准确度有影响
D.
对精密度有影响
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举一反三
【单选题】图纸的基本幅面有五种,分别用幅面代号A0、A1、A2、A3、A4表示,其中A0幅面尺寸为()。
A.
210x297
B.
420x297
C.
420x594
D.
1189x841
【简答题】用how many/how much填空。 ① _____ boys are there? ② _____ water is there?
【单选题】How did Madoff explain his investment strategy to press?
A.
The returns were just amazing and we trusted this guy for decades
B.
He was secretive about the firm’s business, the investment method was marked as “too complicated for outsiders to understand”
C.
Madoff’s annual returns were “unusually consistent”, around 10%
【单选题】图纸的基本幅面有五种,分别用幅面代号A0、A1、A2、A3、A4表示,其中A2幅面尺寸为()
A.
210x297
B.
420x297
C.
420x594
D.
594x841
【单选题】How did Madoff attract his investors?
A.
Madoff’s annual returns were “unusually consistent”
B.
The investment method was marked as “too complicated for outsiders to understand”
C.
Madoff was a “master marketer”,and his fund was considered exclusive, giving the appearance of a “velvet rope”
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