3254. 确保襟翼和缝翼是收上的

make sure that the flaps and the slats are retracted

make sure that the slats and the ailerons are retracted

make sure that the flaps and the elevators are extended

正确答案：A

设备系统操作理论翻译

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109. The fuel quantity processor unit sends excitation to and receives signals from the tank units and the compensators

108. Engine-driven pumps are primary pumps which run continuously when they are turned on

107. Identify the bell crank and shaft with marks to prevent incorrect installation

106. Refer to detail C on fig4 for a different procedure to attach the cable

105. When you use an approved word, make sure that you only use it as that part of speech

104. 安全程序由制造商提供。

103. 急拉氧气面罩来获取氧气。

102. 因此,词组中的单词越多,理解起来就越困难

101. Ream the hole 020 inch larger than the standard

100. Turn the cover until you can get access to the jacks that have + and - marks