×
单选题
251、The usual control for the left pack makes sure that it supplies air at a temperature that gives the necessary cooling for thefight compartment.
A
The usual control for the left pack assures that the temperature of the supplied air will provide the control cabin with theneeded cooling.
B
The usual control: for the left pack ensures that it supplies air at a temperature. The temperature gives the occasional coolingfor the flight compartment.
C
The normal control for the left pack makes sure that it supplies air. The cooling provides the necessary temperature for theflight compartment.
答案解析
正确答案：C
解析：
解析:注释: necessary 必需的,必要的; needed 需要的; occasional 偶尔的。cabin 客舱。
相关知识点：
导言含主题索引
相关题目
单选题
1210、The document points out that the FAA should be contacted prior to any alterations on airp1ane toinsure that airworthiness of the airplane is not violated.
单选题
1209、Make sure that the door is f1ush with the adjacent surfaces.
单选题
1208、Gauges used to indicate lower pressures use a more flexible tube that uncoils and coils more readily.
单选题
1207、应按照适用的飞机服务手册或维修手册完成预防性维修。
单选题
1206、在某些情况下，尤其是对于复杂的飞机，可能需要针对飞机及其系统的适当维修提供专门培训。
单选题
1205、Soak the element for four hours.
单选题
1204、将零件运输到大修车间。
单选题
1203、让油漆在环境温度下变干燥。
单选题
1202、执行此程序来保护碳钢钢索
单选题
1201、Movement of the /center of gravity is proportional to the loads on the wings.
