The assembly line reduced the time to make a magneto by _________

单选题The assembly line reduced the time to make a magneto by __________ within a year.

A． 20%
B． 38%
C． 65%
D． 75%

参考答案D

解析:

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A． $260.
B． $130.
C． $520.
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单选题The last paragraph implies that

A． Today and Tomorrow provides technological solutions for manufacturer
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D． Today and Tomorrow is a Japanese manufacturing encyclopedi

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单选题__________ is the American president during The Great Depression who proposed New Deal.

A． Herbert Hoover
B． Woodrow Wilson
C． Franklin Roosevelt
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