A、 Correct situation is important because it shows how the different parts of the text are relied and to prevent ambiguity.
B、 Correct punctuation is important because it shows how the different parts of the text are related and to prevent ambiguity.
C、 Correct punctuation is important because it shows how the different parts of the text are related and to prevent ambitious.
答案：B
A、 Correct situation is important because it shows how the different parts of the text are relied and to prevent ambiguity.
B、 Correct punctuation is important because it shows how the different parts of the text are related and to prevent ambiguity.
C、 Correct punctuation is important because it shows how the different parts of the text are related and to prevent ambitious.
答案：B
A. 可用燃油是指飞机飞行中使用的燃油。
B. 可用燃油是指可供飞行计划使用的燃油。
C. 飞行计划使用的燃油包含可用燃油。
A. 排放管使通风系统的燃油返回油箱。
B. 将从排气系统返回油箱的燃油排出。
C. 排放通风系统里剩余燃油,返回油箱。
A. 在接触到升降舵调整片后缘时，将指示器归零。
B. 在接触到升降舵调整片前缘时，将指示器归零。
C. 当连接到升降舵调整片前缘时，将指示器一次性归零。
A. 安装前先润滑密封件。
B. 安装前先把润滑油进行密封。
C. 在设备前面密封润滑油。
A. If the clearance dimension is not accurate, adjust the clearance dimension between the extend proximity sensor [44A] and the target [45]. Some of the ducts in the air distribution system are wrapped with insulation material.
B. Adjust the clearance dimension between the extend proximity sensor [44A] and the target [45] in case of the clearance dimension is out of tolerance. Some of the ducts in the air distribution system are wrapped with non-conductive material .
C. Adjust the clearance dimension between the extend proximity sensor [44A] and the target [45] until the clearance dimension is out of range. Some of the ducts in the air distribution system are wrapped with compound material.
A. 在紧急情况下要无条件的服从乘务人员。
B. 在紧急情况下可以向乘务人员提出问题。
C. 在紧急情况不要向乘务人员提出问题。
A. 焊接时请带防护面罩。
B. 在焊接过程中，请使用保护罩。
C. 在焊接的程序中有使用防护屏的要求。
A. 如果错差超过3度，则要改装指南针。
B. 如果误差超过3度，则要校准罗盘。
C. 如果角度超过3度，则要调整圆规。
A. Do not install 0.1 mm thick shims.
B. Do not install shims which are more than 0.1 deep.
C. Do not install shims that are more than 0.1 mm thick.
A. 两个半圆形的挡板控制空气流。
B. 两个半导体的金属圈控制空气流。
C. 两个半圆形的金属圈控制空气流。
