944、make sure that there is no blockage in the pipe 确保管道中没有堵塞

　 make sure that there is something in the pipe

　 make sure that there is nothing in the pipe

　 make sure that blockage is in the pipe

正确答案：B

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330、禁止使用任何非受控的技术文件去做维修工作。

329、Send five copies of the defect report to the engineering authority

328、Make sure that the movement of the elevators is slow.

327、If the left CMC fails, automatic switching occurs so that the right CMC provides the outputs.

326、 The surface contour of a repair in a 3- inches radius from the centerline of a static port does not have
an error of more than 0.007 inch.

325、对于词汇表,只有主要的变化被突出显示,对各种已批准和未批准的示例的微小更改没有突出显示。

324、 To prevent unwanted friction, polish the surface.

135C) for a minimum of one hour.

323、将所有装有不同金属螺套或有较深盲孔的金属零件在烤箱中干燥至少一小时,烤箱温度为 225 到 275
华氏度(107 to135C).

322 、 In 1944, the British Civil Airworthiness Requirements was developed to form the code of the