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单选题
331.The format of the cruise performance presentation is at the discretion of the airplane manufacturer but should not rely on devices such as a power computer( )
A
The form of the cruise performance presentation is at the option of the airplane manufacturer but should not be independent of devices such as a power computer
B
The format of the cruise performance presentation is decided by the airplane manufacturer itself but should not depend on devices such as a power computer
C
The layout of the cruise performance presentation is at the discretion of the airplane manufacturer, however, devices such as a power computer should not be relied on
答案解析
正确答案：B
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