842、Adjust the potentiometer until you do not hear a hum from the loudspeaker.
调整电位器,直到你听不到从扬声器发出的嗡嗡声。

433、不要将不同主题的内容放在同一段落中。

432、Pages of permanently bound Handbooks need not be dated.

431、The symbol means all or most of the rules in that section.

430、The protective paint will prevent-corrosion for six months.

429、Refer to the table that follows for the applicable torque values. 有关适用的扭矩值,请参阅下表。

428、Suggested alternatives are aligned(一致) with their related examples 建议的备选方案与相关示例对
齐

427、Simplified Technical English( ) has a controlled general dictionary (part 2) that gives you the words
most frequently used in technical writing.

426 、 The CAP inspection sets forth manufacturer recommended retirement times for parts or
from service) times for life limited parts or assemblies.

425、Use a solution(溶剂) that contains no oil. 使用不含油的溶液。

424、飞行计划的最高高度将受到影响。