501.In or to a position nearer to the longitudinal axis

271.The schematic diagram should tend to deal with an overall system
rather than with subsystems, e.g., the air conditioning system rather
than a compressor or blower within the air conditioning system.

270.用适用的公式计算压力。

269.High-time airplanes, disassembled for major overhaul, were inspected
to assist in selecting inspection items.

268.确保孔的直径小于规定值。

267.When the selector is in the 100% position, the user will( ) pure
oxygen.

266.If the pressure supply stops, cancel the test.

265.如果风速高得危险,请不要打开货舱门。

264.如果套筒连接不正确,则需进行调整。

263.That continues to be the same, without change.

262.Except for fold out pages and start of chapters,all pages shall be
printed on both sides.