A、 In an emergency, you can use fuel F-43 as an alternative to fuels F-34 and F-40.
B、 In an emergency, you can replace fuels F-43 with fuels F-34 and F-40.
C、 In an emergency, fuel F-43 can be used as an alternate to fuels F-34 and F-40.
答案：A
A、 In an emergency, you can use fuel F-43 as an alternative to fuels F-34 and F-40.
B、 In an emergency, you can replace fuels F-43 with fuels F-34 and F-40.
C、 In an emergency, fuel F-43 can be used as an alternate to fuels F-34 and F-40.
答案：A
A. Obey the safety precautions when you do work with high voltages.
B. Obey the safety warnings when you do work with high impedance.
C. Obey the safety cautions when you do work with high capacitance.
A. When a low flow or undercooling condition occurs, the low flow sensor sends an alarm signal to the flight compartment for warning.
B. When a low flow or not sufficient cooling condition occurs, the low flow sensor supplies an alarm signal to the flight compartment for annunciation.
C. When a low flow or insufficient cooling condition occurs, the low flow sensor applies a alarm signal to the flight compartment for caution.
A. 用一块棉布把窗玻璃擦亮。
B. 用一块软布把窗玻璃擦干净。
C. 用一块软布把窗玻璃擦亮。
A. 升降舵/升降副翼是可拆卸翼面，用于纵向控制/纵向和横向控制。
B. 升降舵/升降副翼是可移动翼面，用于纵向控制/纵向和侧向控制。
C. 升降舵/升降副翼是可拆卸翼面，用于纵向控制/纵向和水平控制。
A. 到达行程末端后作动筒中的微小电门会衔接。
B. 在旅程结束后作动筒中的微小电门会断开。
C. 到达行程末端后作动筒中的微动电门断开。
A. Another important function of lubricating oil is to protect the corroded metal surfaces.
B. Another important task of the oil is to protect the metal surfaces from corrosion.
C. Preventing the metal surface from further corrosion is the other essential function of the lube.
A. 故障隔离手册提供信息用于识别，定位和修正任何故障,并需要放在飞机上。
B. 故障隔离手册提供用于识别的信息来定位和纠正可能在飞机上发生的任何故障的信息。
C. 故障隔离手册提供用于识别、定位和纠正可能在飞机上发生的任何故障的信息。
A. 结果是，孔的直径达到了允许的最大值。
B. 结果是，允许孔的尺寸超出最大范围。
C. 结果是，孔的尺寸大于允许的最大尺寸。
A. 需要提供紧急程序。
B. 应提供紧急下降程序。
C. 紧急下降时提供应急程序。
A. To gain entry to the nearby structure, take out the sensor.
B. Remove the sensor to get access to the adjacent structure.
C. Disassemble the sensor to get access to the adjacent structure.
