Use the manual procedure if it is not possible to use the automatic control.

A. 当使用引号的技术名称以使读者读起来更清晰时，带引号的一组单词也是适用的名词词组中的一个词。

B. 当使用连字符连接长的技术名称从而使读者读起来更清楚时，连接在一起的一组单词在相应名词词组中也算作一个词。

C. 当用冒号连接长的技术名称以使读者读起来更清楚时，冒号连接的一组单词也可以用作适用的名词词组中的一个词。

A. When described the aircraft and its system, you should always use third people talking.

B. Generally, in describing the airplane or its system, third person wording should be used.

C. When you describing the airplane systems, third person mood shall be used.

A. Many readers have little knowledge of English. Complex sentence structure and the large number of meanings and antonyms that many English words have can cause misconception.

B. Many readers have a limited knowledge of English. Complex sentence structure and the large number of meanings and synonyms that many English words have can cause confusion.

C. Many readers have a little knowledge of English. Complex sentence structure and the large number of meanings and homonyms that many English words have can cause frustration.

A. 操作调光开关，确保光线的强度发生变化。

B. 操作旋转式开关，确保灯光发生变化。

C. 已调节明暗开关，灯光的亮度发生了变化。

A. Explain check them whether normal or not, and how to identify a fault.

B. Make clear that if they operate properly and how to isolate the malfunction.

C. Explain how to check them for proper operation and how to recognize a malfunction.

A. Make sure that the scale is not more than 400 knots.

B. Make sure that the indication is not more than 400 knots.

C. Make sure that the indication is not more than 400 miles.

A. 为避免由于磁通线引起的温度读数偏差，不要将热电偶导线与电源线邻近或穿过。

B. 为避免由于磁感线引起的温度读数误差，不要将热电偶与电缆邻近或交叉。

C. 不要将热电偶导线与电源线靠近或相交，以防止由于磁通线引起的错误温度读数。

A. After 10 flight cycles or 25 flight hours, which comes first, the rod end bearing shall be discarded if its wear is greater than 0.010 inch of diameter.

B. If the rod end bearing wear is greater than 0.010 inch in radial play, reject it within next 10 flight cycles or 25 flight hours whichever comes first.

C. Destroy the rod end bearing during 10 flight cycles or 25 flight hours when its wear is more than 0.010 inch of its radius, whichever comes first.

A. 涡轮发动机转速表通常用涡轮最大速度的百分比来测量速度，特别是螺旋桨。

B. 涡轮发动机转速表通常用涡轮（或者特指螺旋桨）的最大速度的百分比来测量速度。

C. 除非特指涡轮螺旋桨发动机，涡轮发动机转速表通常用涡轮最大转速的百分数来表示发动机转速。

A. 左1号登机门1号地板右前边缘有一条1英寸深6英寸长的凹陷。

B. 左1号登机门1号地板离右前边缘6英寸处有一条1英寸深的凹槽。

C. 左1号登机门有一块地板到右前边缘6英寸处有一条1英寸深的凹坑。