The numbers 09 and 27 on a runway may indicate that the runway is oriented approximately _______ ．

单选题

The numbers 09 and 27 on a runway may indicate that the runway is oriented approximately _______ ．

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单选题

Stagger the tab dividers and 1abe1 them with section numbers or titles, or both.

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单选题

The backside of the title page should be left blank to avoid the need for revision and potential loss of the inserted airplane serial and registration numbers.

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多选题

Landscape fragmentation refers to the process and result of fragmentation of intact patches into larger numbers but smaller areas （ ）.

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单选题

Large numbers of state-run preschools were expediently closed down during the 1990s economic reform and instead,a variety of for-profit private preschools sprung ______ across the country.

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