A、 Make sure that there is something in the pipe.
B、 Make sure that there is nothing in the pipe.
C、 Make sure that blockage is in the pipe.
答案：B
解析：这道题是关于管道检查的问题。要确保管道没有堵塞，意思就是要确保管道内部没有任何障碍物。所以正确答案是B选项：Make sure that there is nothing in the pipe。
举个生动的例子来帮助理解：想象一下你家的水槽堵了，水无法流出。这时候你需要检查管道，确保没有任何东西堵塞在里面，才能让水顺利流出。如果你检查后发现有东西堵在管道里，那就需要清理掉它，让水可以畅通无阻地流动。所以，确保管道没有任何东西，才能保证水流畅通。这也是为什么正确答案是B选项的原因。
A、 Make sure that there is something in the pipe.
B、 Make sure that there is nothing in the pipe.
C、 Make sure that blockage is in the pipe.
答案：B
解析：这道题是关于管道检查的问题。要确保管道没有堵塞，意思就是要确保管道内部没有任何障碍物。所以正确答案是B选项：Make sure that there is nothing in the pipe。
举个生动的例子来帮助理解：想象一下你家的水槽堵了，水无法流出。这时候你需要检查管道，确保没有任何东西堵塞在里面，才能让水顺利流出。如果你检查后发现有东西堵在管道里，那就需要清理掉它，让水可以畅通无阻地流动。所以，确保管道没有任何东西，才能保证水流畅通。这也是为什么正确答案是B选项的原因。
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. The engine-driven pump is the major pump that works endless when it is switched on.
B. The engine-driven pumps are the main pumps that runs continuously during operation.
C. The engine-driven pumps are the secondary pumps that operates infinitely after running.
A. The accuracy of the adjustment can vary.
B. The accuracy of the adjustment can be fixed.
C. The precision of the adjustment can be prevented .
A. Flash the screen with hot water.
B. Fresh the filter with hot water.
C. Rinse filter in hot running water.
A. The auxiliary battery and auxiliary battery charger and the main battery connect together during non-normal conditions to help supply power.
B. In normal conditions,the auxiliary battery and auxiliary battery charger should be disconnected.
C. In non-normal conditions,the auxiliary battery and auxiliary battry charger should be disconnected.
A. The computer needs to be backup at each interval.
B. The backup of the computer is necessary.
C. Back up your computer regularly.
A. Provide the pneumatic power for the system.
B. Supply the electrical power for the system.
C. Remove the electrical power of the system.
解析：这道题是关于系统去能化的问题。De-energize意味着去能化，也就是移除系统的电力。所以正确答案是C。
让我们通过一个生动有趣的例子来帮助你更好地理解这个概念。想象一下你的手机是一个系统，它需要电力才能正常工作。当你想要关闭手机时，你会按下电源按钮，这样手机就会De-energize，也就是移除电力，手机就会关闭。在这个例子中，De-energize就相当于移除手机的电力，让手机关闭。
A. During antenna installation, disregard the direction the alignment arrow is pointing.
B. Align the antenna in the opposite direction in consideration of the alignment arrow in installation.
C. When installing the antenna, make sure the alignment arrow is directed towards the front.
A. The items in the Emergency Procedures check list are determined to be essential in aid of the pilot in an emergency and should be limited to the minimum number.
B. A limited number of items in the Emergency Procedures check list are determined to be essential to aid the pilot in an emergency.
C. To aid the pilot in an emergency, it is determined that the Emergency Procedures check list should contain only essential items.
A. If the right engine stops, what position will APU servo valve stop at?
B. If the right engine is not running,what position will APU bleed valve stop at?
C. If the right engine stops, will APU servo valve stop at close position?
