415、Terms that contain a capital letter plus a noun, or a number plus a noun usually describe the shape or
configuration of something.

A. 　确保撑杆轮与滑道上的凸槽对齐

B. 　确保转向架滚轮与轨道上的凹槽对齐。

C. 　确保支架凸轮与滑轨上的滑块对齐。

A. 　如果在平时使用中,大家更爱使用全称的话,其缩写也应标注在标题的括号内。

B. 　如果在习惯用法中,相对于全称更倾向使用缩写的话,则该缩写也应包括在标题的括号内。

C. 　应该将缩写包含在标题的括号内,如果平常更喜欢使用缩写而不是全称的话。

A. 　停止测试 2 秒钟

B. 　2 秒后启动测试

C. 　2 秒后终止测试

A. 　 There are trim tabs at the rear of both ailerons.

B. 　 There are trim tabs at the rear of both flaps.

C. 　 There are trimmable stabilizers at the rear of both elevators.

A. 　 At the location shown in the figure, waterproof corrosion inhibiting compound has been used on certain
aircraft construction. To keep the effectiveness of this protection, reapply the compound in these or other
locations periodically.

B. 　 Water displaying corrosion inhibiting compound has applied on certain airplanes structure in the locations
in this figure. Periodic reapplication must be applied in these and other locations, so as to maintain
effectiveness of this protection.

C. 　 Water displacing anti-seize compound has been applied on certain airplanes construction in the locations
in this figure. Periodic reapplication should be utilized in these and other locations,
in order to keep effectiveness of the protection

A. 　 Notes emphasize conditions 'such as operating procedures, inspection, repair or maintenance, etc., which
may be met a appropriate.

B. 　 Notes emphasize the conditions of operation procedure, inspection, repair or maintenance etc., must be
followed.

A. 　长的复合句可以通过垂直列表简化以便理解

A. 　 lf liquid spills in the kitchen, all traces of the liquid must be cleaned promptly, and the concerned area
must be completely dry.

B. 　if liquid spillen inside the galley ,you must remove all signs of liquid and fully dry the areas of contamination immediately.

C. 　 lf liquid spills in the galley, all marks of the liquid must be removed at once and the polluted area must be
completely dried.

A. 　 Despite the pressure decreases, the switch must stay closed.

B. 　 Although the pressure decreases, the valve must stay closed.

C. 　 In spite of the decreases of the pressure, the door must stay closed.

A. 　 Install the cushion before you install the seat.

B. 　 install the seat before you install the cushion.

C. 　 Install the seat after you install the cushion.