A、 Wait for the paint to dry completely before polishing it again.
B、 Do not apply the second layer of paint if the first layer has dried thoroughly.
C、 Let the first layer of paint dry fully before you apply the second layer.
答案：C
A、 Wait for the paint to dry completely before polishing it again.
B、 Do not apply the second layer of paint if the first layer has dried thoroughly.
C、 Let the first layer of paint dry fully before you apply the second layer.
答案：C
A. One of the safety precautions is to keep the combustible material from the work area at distance of 50ft at least.
B. One of the safety precautions is to keep the flammable material from the work area at distance of 50ft at least.
C. One of the safety precautions is to keep the combustible material from the work area at a minimum distance of 50ft.
A. 控制部分控制螺旋桨叶片俯仰，但不包括任何与螺旋桨组件一起旋转的部件。
B. 控制部分能够控制螺旋桨桨叶的桨距，但不包括任何与螺旋桨组件一起旋转的部件。
C. 控制部分控制螺旋桨叶角度，包括任何与螺旋桨组件一起旋转的部件。
A. 门是由碳纤维复合塑料制成的。
B. 门的主要成分是碳纤维复合材料。
C. 门是由碳纤维增强塑料制成的。
A. 当维修程序不要求很长且其相关内容简单，则这些内容可以和维修实践编辑在一起。
B. 当所需的维修程序不长且相对简单时，可以将上述的内容组合在一个标题下，称为维修实践。
C. 当要求维修程序不得过长、内容简明扼要时，可以将上述内容进行组合，编入维修实践中。
A. An annunciator device is displayed on the panel, which shows how it works.
B. If an annunciator panel is installed, explain how it operates.
C. If a display appears on the annunciator panel, it explains that how the system works.
A. After the valid date of this amendment, a newly produced aircraft＇s pilot＇s manual must be approved by FAA.
B. After this revision date, FAA must approve a newly produced aircraft＇s pilot＇s manual .
C. After the effective date of this revision, Pilot＇s Operating Handbooks for newly manufactured airplanes must be FAA Approved Airplane Flight Manuals.
A. 发动机支架用于支撑发动机，固定机舱或塔架上的框架，要么是组装式结构，要么是锻造件。
B. 发动机支架要么是积木式结构，要么是锻造件，用来支撑发动机并将其固定在机舱或塔架上。
C. 发动机支架指支撑发动机并将其固定在短舱或吊架上的框架，要么是装配结构，要么是锻造件。
A. The word list only shows major changes.
B. The word list only shows minor changes.
C. Only major changes are highlighted in the word list.
A. The generators supply a three-phase voltage. The frequency of this voltage increases when the generator rotor speed increases.
B. The rate of the three-phase voltage generated by the generator is proportional to the rotational speed of the generator rotor.
C. The frequency of the three-dimensional voltage produced by the generator is changed with the rotational speed of the generator rotor.
A. Pavement requirements for the exactly aircraft are derived from the static analysis of loads imposed on the main landing gear struts.
B. Pavement requirements for the one aircraft are derived from the static analysis of loads imposed on the main landing gear struts.
C. Pavement requirements for the particular aircraft are derived from the static analysis of loads imposed on the main landing gear struts.
