1107. 当通风空气温度升至27℃时,排气阀打开。

When the temperature of vent rises to 27℃, the exhaust pipe opens

When the ventilation temperature is above 27℃, the drain mast opens.

When the temperature of the ventilation air increases to 27℃, the discharge valve opens.

正确答案：C

设备系统操作理论翻译

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2256. 不要将不同主题的内容放在同一段落中。

2255. 在裸露的金属上涂一薄层密封胶。

2254. Use 14-point uppercase bold for the word WARNING and 10-point uppercase bold for the WARNING TEXT

2253. To prevent unwanted friction, polish the surface

2252. 更换液压油箱时的拆卸步骤可能会分解为以下项目

2251. The word use" is an approved word in the dictionary"

2250. 对系统进行渗漏测试。

2249. These test and inspection equipment and tools are used to make airworthiness determinations on articles

2248. To install the fuel temperature indicator, tilt it rearward