3137. 确保近地警告系统是可以操作的( )

　Make sure the ground proximity warning system is can operate

　Make sure the ground approaching alerting system is can operate

　Make sure the ground proximately warning system is can operate

正确答案：A

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1163. 保证营运人维修单位保留每架航空器所要求的维修、改装、检查记录( )

1162. 确保近地警告系统可以工作( )

1161. Always make sure that you know what you want to say and that the words that you use give the meaning that you want( )

1160. A red mark on the pin identifies the lubrication point ( )

1159. Open the door until it touches the floor( )

1158. 此外，所有手册的封面将在封面上醒目地显示以下声明“这本手册包含 FAR___部要求的维修信息” （根据需要插入 23 或 25 部）。

1157. Hydraulic pressure goes through the valve and drives the hydraulic motor( )

1156. 如果滑油滤中有金属沉积物,检查滤芯有无磨损。( )

1155. It includes those maintenance practices necessary to prepare the aircraft for weighing ( )

1154. Exterior Placards and Markings are required for ground servicing instructions, inspections, cautions and warnings ( )