A、 When the pump turns each rotation, a constant displacement is moved by the constant displacement pump.
B、 Constant displacement pump is a pump that moves a constant volume of fluid with each roration and the pump operates at the constant speed.
C、 Constant displacement pump moves a constant volume of fluid and provides a constant output pressure with each roration.
答案：A
A、 When the pump turns each rotation, a constant displacement is moved by the constant displacement pump.
B、 Constant displacement pump is a pump that moves a constant volume of fluid with each roration and the pump operates at the constant speed.
C、 Constant displacement pump moves a constant volume of fluid and provides a constant output pressure with each roration.
答案：A
A. 在最后运转发动机20分钟。
B. 在地面运转发动机20分钟。
C. 发动机慢车运转20分钟。
A. 可以在强风天气下打开货舱门,强风对于打开的货舱门是非常危险的。
B. 不要在强风天气下打开货舱门,强风对于打开的货舱门是不安全的。
C. 不要在强风天气下打开货舱门,强风对于打开的货舱门是非常危险的。
A. The back of the title page can be left blank.
B. The manufacturer’s logo must be printed on the back of the title page.
C. The back of the title page must be left blank without any deviation.
A. L1 entry door life vests were not installed by flight crew.
B. Life vests at L1 entry door flight crew station not install.
C. Life vests were not installed at L1 entry door flight crew station.
A. If you find metal particles in the reservoir, find their source and repair the broken part.
B. If you find metal particles in the pump, find their source and repair the defective part.
C. If you find material particles in the pump, find their source and repair the damaged part.
A. 写作规则包括语法和文体观点。字典给出了撰写人可以使用的一般词汇。
B. 写作规则包括语法和文体方面。字典给出了撰写人可以使用的—般词汇。
C. 写作规则包括语法和文体细则。字典给出了撰写人可以使用的全体词汇。
A. Several screws pulled out in front of right wing fuselage fairing.
B. Several screws lost in front of right wing fuselage fairing.
C. Forward of right wing body fairing has several loose screws.
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. 这种调整的精度很重要
B. 这种调整的范国很重要
C. 这种测试的精度很重要
A. 在转动滑轮之前 取下定位销
B. 在转动扇形轮之前 取下定位销
C. 在转动滚轮之后 取下销子
