A、 The wording given in the approved example is of a suggested nature. It only represents approved words for writing the same information. You can express the same thing with different constructions and other approved words.
B、 It is necessary to use these terms in the approved example sentences to write standard information. You can choose what to express and how to express it from the approved structure
C、 The wording must be approved to indicate that the information should be written to the same standard and you can often use similar structures and words to describe the same thing.
答案：A
A、 The wording given in the approved example is of a suggested nature. It only represents approved words for writing the same information. You can express the same thing with different constructions and other approved words.
B、 It is necessary to use these terms in the approved example sentences to write standard information. You can choose what to express and how to express it from the approved structure
C、 The wording must be approved to indicate that the information should be written to the same standard and you can often use similar structures and words to describe the same thing.
答案：A
A. 所有在此区域人员必须使用护目镜。
B. 所有在此区域人员必须使用防护服。
C. 所有在此区域人员必须使用呼吸设备。
A. CRES causes magnesium, aluminum, or cadmium to corrode when it touches these metals.
B. Stainless steel corrodes once touching magnesium, aluminum, or chromium metals.
C. Magnesium, aluminum, or chromium metals shall be protected from the corrosion caused by CRES.
A. 将容器置于排放活门下方。
B. 将排放活门置于油箱下方。
C. 将容器从排放活门下方移开。
A. 交流电源系统设计避免同一个电源同时给两个负载供电。
B. 交流电源系统设计防止两个电源同时向同一负载供电。
C. 备用电源系统被设计成避免两个电源同时向同一用户供电。
A. Modifications, additions and omissions, a black line should be drawn vertically at the footer outside of the page parallel to the part of the change.
B. Revisions, additions and deletions shall be identified by a vertical black line along the outside of the page opposite only that portion of the printed matter that was changed.
C. Alterations, substitutions and eliminates should be marked with a black slash outside the scope of the page to coincide with the section being changed.
A. 文件必须经常修订。
B. 文件必须易于修订。
C. 文件必须容易阅读和看见。
A. Make sure that chemical compound are not near the engine nozzle.
B. Make sure that solvents are not near the engine exhaust.
C. Make sure that there＇s no isopropyl alcohol near the engine exhaust port.
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.
A. 在接近跑道过程中，偏差指针在航向指示器上显示飞行员正在朝哪个方向飞行。
B. 在接近跑道过程中，飞行员必须朝着航向指示器偏航指针的方向飞行。
C. 在接近跑道过程中，航向指示器的偏差指针向飞行员显示飞机必须向哪个方向飞行。
A. Soak the element for two hours.
B. Wet the element for two hours.
C. Stove the element for two hours.
