A、 It is possible to mix appropriate engine oils agreed by engineers .But we suggest that you use the identical oil agreed by the same manufacturer.
B、 It is possible to mix approved engine oils. But we recommend that you use the same approved oil from the same manufacturer.
C、 It is possible to mix engine oils authorized by the same manufacturer. But we suggest you use the same oils authorized by the engineers.
答案：B
A、 It is possible to mix appropriate engine oils agreed by engineers .But we suggest that you use the identical oil agreed by the same manufacturer.
B、 It is possible to mix approved engine oils. But we recommend that you use the same approved oil from the same manufacturer.
C、 It is possible to mix engine oils authorized by the same manufacturer. But we suggest you use the same oils authorized by the engineers.
答案：B
A. A centrifugal pump supplies hydraulic fluid to the unit.
B. The unit is isolated from hydraulic fluid through a centrifugal pump.
C. A centrifugal pump withdraws hydraulic fluid from the unit.
A. 每个图形或表格数据应包括一个或多个正确使用数据展示的示例，除非其使用非常简单，不可能出现误用或误解。
B. 除非简单到不可能出现误解或误用，否则每个图或表格应至少给出一个数据使用示例。
C. 每个图形或表据展示应包括一个或多个正确使用数据展示的示例，除非其使用足够简单，不可能出现误用或误解。
A. 确保钢索张力正常。
B. 确保锁定线束绷紧。
C. 确保保险丝有张力。
A. Point out that the FAA should be contacted prior to any alterations on airplane to ensure that the airworthiness of the airplane is not violated.
B. Point out that the FAA should be informed after any modifications on airplane to ensure that the airworthiness of the airplane is not effected .
C. Point out that any modifications on airplane may be informed to FAA to confirm the airworthiness of the airplane.
A. As the depressurization of the alternate system, the hydraulic system A must be released to open the rudder hydraulic system selector valve and permit hydraulic fluid to flow to the rudder actuator below.
B. In order to depressurize standby system, the hydraulic system A must be depressurized to open the rudder hydraulic system selector valve and let hydraulic fluid flow to the lower rudder actuator.
C. Due to the depressurization of the alternate system, the hydraulic system A must be released to open the rudder hydraulic system selector valve and permit hydraulic fluid to flow to the bottom rudder actuator.
A. If an engine overheat/fire detector can not operate, the engine and APU fire alarm unit alternatively changes to single loop operation. In the single loop module, only one loop must check the engine and APU fire detection module for an overheat or fire co
B. If an engine overheat/fire detector fails to operate, the engine and APU fire detection module automatically changes to single loop operation. In the single loop mode, only one loop must detect an overheat or fire condition for the engine and APU fire det
C. If an engine overheat/fire detector is inoperative, the engine and APU fire detection module automatically changes to single loop operation. In the single loop mode, only one loop must detect an overheat or fire condition by the engine and APU fire detect
A. Grind the surface with a soft cloth after it becomes light.
B. Rub the surface with a soft cloth when it becomes brightness.
C. Polish the surface with a soft cloth until it becomes shiny.
A. Set the "ATT" knob to the local attitude.
B. Set the "ALT" knob to the local altitude.
C. Set the "LAT" knob to the local latitude.
A. 以下词语和定义符合适用于航空航天和国防的技术出版物规范。
B. 以下词汇和定义同意适用于航空航天和防护的技术出版物的规范。
C. 以下词汇和术语与航空和防务的技术出版物实际使用的规范相符合。
A. Notes emphasize conditions such as operating procedures, inspection, repair or maintenance, etc., which may be met as appropriate.
B. Notes emphasize the conditions of operation procedure, inspection, repair or maintenance, etc., must be followed.
C. Conditions for operating procedures, inspection, repair or maintenance, etc. must be emphasized in the notes.
