56.Descriptive Data shall be supplied for standard and optional engine and propeller installations and fuel and oil systems ( )

　对于标准和选装的发动机和螺旋桨装置以及燃油和滑油系统,应提供描述性数据。

　参考数据应包活标准和可用发动机和螺旋桨设备以及燃油和滑油系统。

　系统数据必须涵盖常规和可用发动机和螺旋桨装置以及燃油和润滑油系统。

正确答案：A

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