A、 When there are too many positive or subtractive pressure in the fuel tanks the pressure relief valve eliminates damage to the wing structure.
B、 When there is too much plus or minus pressure in the fuel tanks, the pressure relief valve previews damage to the wing structure.
C、 The pressure relief valve prevents damage to the wing structure when there is too much positive or negative pressure in the fuel tanks.
答案：C
A、 When there are too many positive or subtractive pressure in the fuel tanks the pressure relief valve eliminates damage to the wing structure.
B、 When there is too much plus or minus pressure in the fuel tanks, the pressure relief valve previews damage to the wing structure.
C、 The pressure relief valve prevents damage to the wing structure when there is too much positive or negative pressure in the fuel tanks.
答案：C
A. The temperature of the oil has an effect on the precision of the oil level indicator;
B. The temperature of the oil has a negative effect on the oil level indicator;
C. The temperature of the oil has a positive effect on the indicator of oil level;
A. To include a relocated chapter table of contents is not required if the total chapter has been relocated, while the subsystem relocations should then be identified in the table of contents at the front of the book.
B. On conditional that the total chapter has been relocated, to include a relocated chapter table of contents is not important, then the subsystem relocations should then be identified in the table of contents at the front of the book.
C. If the total chapter has been relocated, it is not forced to contain a relocated chapter table of contents, and the subsystem relocations should then be identified in the table of contents at the front of the book.
A. 只能使用字典里批准的单词作为演讲的一部分。
B. 只能使用字典里批准的单词作为句子的一种成分。
C. 只能使用字典里批准的单词的词性。
A. 型号合格证
B. 类型合格证
C. 型号许可证
A. 所有子系统维护数据都被划分为标准类型的信息。
B. 所有子系统的维护数据被分为特定类型的信息。
C. 所有子系统的维护数据被分离为特殊的信息类型。
A. Hello !May I speak to the Boeing representive Mr. David?—Speak louder, please. He will pick up your phone at once.
B. Hello !May I speak to the Boeing representive Mr. David?—Wait a moment , please. He will pick up your phone at once.
C. Hello !May I speak to the Boeing representive Mr. David?—Call again , please. He will pick up your phone at once.
A. Working parts for use at the inlet or outlet and movable parts for inclusion of other structures within the fuselage.
B. Those removable units used for entrance or exit , and for enclosing other structure contained within the fuselage.
C. Replaceable parts for use at inlet and outlet and for enclosing other structures in the fuselage.
A. You can use the module to disassemble the disassembly fixture.
B. The module that you can use to disassemble is the disassembly fixture
C. You can use the disassembly fixture to disassemble the module.
A. 在线路上再安装多个垫圈。
B. 在管道上再安装多个垫圈。
C. 在管道上再安装多个螺栓。
A. 火灾是因为过热或者有火焰的液体泄漏,并且可能飞机不安全了。
B. 火灾可由过热或易燃液体泄漏引起,并且可能飞机就危险了。
C. 火灾可由过热或易燃流体泄漏引起,并可能危及飞机安全。
