A、 There are two methods of loading the tank.
B、 The load is determined in two ways.
C、 You have to fill the tank twice.
答案：A
解析：这道题目是关于加油的方法的。选项A说有两种加油的方法，这是正确的答案。现在让我通过联想和生动有趣的例子帮助你更好地理解这个知识点。
想象一下你有一辆汽车，汽车的油箱空了，需要加油。在加油站，你可以选择两种不同的加油方式。第一种方式是使用加油枪直接往油箱里加油，这是一种方法。而第二种方式是使用加油桶将油倒入油箱，这是另一种方法。所以，这道题目中提到的两种方法就是指这两种不同的加油方式。
A、 There are two methods of loading the tank.
B、 The load is determined in two ways.
C、 You have to fill the tank twice.
答案：A
解析：这道题目是关于加油的方法的。选项A说有两种加油的方法，这是正确的答案。现在让我通过联想和生动有趣的例子帮助你更好地理解这个知识点。
想象一下你有一辆汽车，汽车的油箱空了，需要加油。在加油站，你可以选择两种不同的加油方式。第一种方式是使用加油枪直接往油箱里加油，这是一种方法。而第二种方式是使用加油桶将油倒入油箱，这是另一种方法。所以，这道题目中提到的两种方法就是指这两种不同的加油方式。
A. Landing gear is left for ten minutes.
B. Landing gear should be kept extended for ten minutes.
C. Extend landing gear after ten minutes＇ retraction.
解析：这道题是关于飞机起落架的操作指令。在这个情景中，指令是让起落架延长十分钟。正确答案是B，即起落架应该被延长十分钟。这个指令是为了确保起落架在使用前得到充分的检查和准备，以确保飞行安全。
举个生动的例子来帮助理解这个知识点：想象一下你是一名飞行员，你的飞机刚刚降落在机场，地面工作人员告诉你要将起落架延长十分钟。这意味着你需要按照指令将起落架保持在延长状态，以便地面工作人员可以进行必要的检查和维护工作。只有在起落架得到充分准备之后，你才能安心地继续下一次飞行。这个例子帮助你更好地理解了为什么起落架需要被延长十分钟这个操作指令的重要性。
A. There are several steps to replace the light assembly.
B. The steps to replace the light assembly are not complicated.
C. The following steps are to change the light component.
A. The usual control for the left pack ensures that it supplies air at a temperature. The temperature gives the occasional cooling for the flight compartment.
B. The normal control for the left pack makes sure that it supplies air. The cooling provides the necessary temperature for the flight compartment.
C. The usual control for the left pack assures that the temperature of the supplied air will provide the control cabin with the needed cooling.
A. Use the specified one if the equivalent material is not available.
B. Use the available equivalent one if no material is specified.
C. If you can not get the specified material, use an equivalent.
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.
A. If the valve is the source of the fuel leak, discard the valve seals and install new ones.
B. If the fuel leaks out of the valve, reinstall the valve seals.
C. If the fuel leak flows towards the valve, discard the valve seals and install new ones.
A. Use the marks on the bellcrank and shaft to identify them and prevent incorrect installation.
B. Mark the bellcrank and shaft so that they＇ll be identified and incorrect installation will not occur.
C. Put marks on the bellcrank and shaft or incorrect installation will occur.
A. The operation procedure requires that the maintenance behavior be logically executable.
B. The logical maintenance steps or operating procedures constitute the maintenance procedures.
C. Break down maintenance activities into logical steps or operations as required by procedures.
A. This document provides supplementary information to the applicable manual.
B. This document provides primary information to the applicable manual.
C. This document provides special information to the applicable manual.
解析：这道题考察的是词语的用法和区别。在英语中，supplemental和supplementary都是形容词，意思是“补充的”，但是它们在使用上有一些区别。supplemental通常指的是在原有基础上额外提供的信息，起到弥补不足的作用；而supplementary则更强调是在原有信息的基础上进一步扩展或完善。在这道题中，正确的答案是A，因为这份文件提供的信息是对适用手册的补充，起到弥补不足的作用。
举个生动的例子来帮助理解：就好比你在学习数学的时候，老师讲解完一个定理后，给你发了一份额外的练习题，这份练习题就是supplemental information，是为了帮助你更好地理解和掌握这个定理；而如果老师给你发了一份关于定理背景知识的详细解释，那就是supplementary information，是为了让你对这个定理有更全面的了解。
A. Apply two kindreds of protective compound to shield the sealant from any harm caused by hydraulic fluid.
B. In order to prevent damage to the sealant from hydraulic fluid, it is necessary to apply two layers of protective compound.
C. To prevent hydraulic fluid from drowning the sealant, it is recommended to apply two layers of protective compound.
