1007、 The elevators must move symmetrically. 电梯必须对称移动。

268、The flight crew can use the flight director commands to control the attitude of the airplane.

267、Do test B as an alternative to test A. 做测试 B 作为测试 A 的替代方案。

266、Care must be taken not to damage the firewall cover.

265、The topic sentence is the first and most important sentence in a paragraph.

264、The laptop has three primary parts.

263、The writing rules cover aspects of grammar and style. The dictionary gives the general words that a
writer can use.

262 、 This method is recommended as minimizing errors of distribution, and also informs owners of the
availability of systems and equipment.

261、此步骤仅适用于包括极少量铆钉的修理。

260、This table that follows shows the data

259、所有页面上必须有制造商的报头,出版物标题,飞机型号,发行或修订日期。