1299. First, second and third level heads and captions should be distinctive in size and/or style ( )

　The first, second level heads and captions should be exactly identical to the third level ones in size and/or style

　The first level heads and captions should maintain consistent with the second and third level ones

　The size and/or style of the first, second and third level heads and captions should be different and easily noticed

正确答案：C

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3001. Lock the pulley with the rigging pin( )

3000. What is the meaning of ‘Propeller Governor’( )

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