A、 You had better not to weld engine components when the engine is installed on the airframe.
B、 You＇re not allowed to operate engine components when the engine is installed on the airframe.
C、 You had-better not to weld engine components when the engine is running.
答案：A
A、 You had better not to weld engine components when the engine is installed on the airframe.
B、 You＇re not allowed to operate engine components when the engine is installed on the airframe.
C、 You had-better not to weld engine components when the engine is running.
答案：A
A. 在进出口使用的可更换部件,以及用于将其他结构封闭在机身内的可更换部件。
B. 在入口或出口使用的可使用部件,以及用于将其他结构包含在机身内的可移动部件。
C. 在入口或出口使用的可移动部件,以及用于将其他结构封闭在机身内的可移动部件。
A. In designing schematic diagrams, it may be necessary to combine two aspects: specification necessary to make the diagram clear, And the simplicity essential for ease of reading and understanding.
B. In designing schematic diagrams, it may be necessary to comprehend two aspects: detection necessary to make the diagram self-contained, And the simplification essential for ease of reading and understanding.
C. In designing schematic diagrams, it may be necessary to compromise two aspects: detail necessary to make the diagram self-explanatory, And the simplicity essential for ease of reading and understanding.
A. Includes glass and butanone damage limitation.
B. Damage limitation including fiberglass and butanone.
C. Include damage limits for glass and acrylic.
A. 包括前环形罩、气道、压气机风扇罩、埋入式发动机导管、涡流发生器、作动器、控制手柄、钢索、管道、连杆、门、警告系统、位置指示器等。
B. 包括前环形罩、气道、压气机风扇罩、埋入式发动机导管、涡流发生器、作动器、控制手柄、钢索、管道、连杆、门、警告系统和位置指示器。
C. 包括前环形罩、气道、压气机、埋入式发动机导管、涡流发生器、作动器、控制手柄、钢索、管道、连杆、门、警告系统、位置指示器等。
A. 另一种类型的速度调节组件是可限流器。它包含一个可调节的螺旋活门,依靠螺纹可以从顶部一直旋转到底部。
B. 另一种类型的速度调节组件是可变限流器。它包含一个可调节的蝶形活门,其顶部有指向下部的螺栓。
C. 另一种类型的速度调节组件是可变限流器。它包含一个可调节的针状活门,其顶部有螺纹,下端有一个尖。
A. Stringers and the upper wing skin are called vent channels; The vent channels go through drain float valves in the center tank.
B. Stringers and the upper wing skin are composed of the vent channels. The vent channels got exhaust float valves from the center tank.
C. Stringers and the upper wing skin make the vent channels, The vent channels have drain float valves in the center tank.
A. Before you use a word, read its definition in the approved meaning column of the dictionary.
B. Before you use a word, read its approved meaning in the definition column of the dictionary.
C. Before you use a word, read its meaning in the approved column of the dictionary definition.
A. Bare metal area give temporary protect.
B. Give temporary protection to areas of bare metal.
C. Give temporary protection to areas of bared metal.
A. A advisement of information in a ready-made manual can be taken as a revision.
B. A revision refers to an adjustment of information in a manual under publishing.
C. A modification of information in an existing manual can be called a revision.
A. remove
B. install
C. instruction
