Make sure that the two pistons extend equally.

A. The manufacturer shall prepare all text in either one or two columns with justification at his own discretion , but, two columns are preferable for readability.

B. Manufacturers shall prepare all text both in one and two columns separately; however, two columns are better for reading.

C. According to the manufacturer＇ explanations, all text shall be prepared in one or two columns; however, two columns have better visual effect.

A. Wrap two tapes around the pipe connectors.

B. Wrap the pipe joints with tape twice.

C. Wind two layers of tape around the pipe joints.

A. 如果由于腐蚀你不能拆卸螺栓，则用油浸泡。

B. 如果你不能去除螺栓的腐蚀，则用油浸泡。

C. 如果由于腐蚀不能拆卸螺钉，你可以涂渗透油。

A. A number in the bottom left corner of the display means a related page.

B. A number in the top left corner of the display refers to a related page.

C. A number in the top left corner of the display is the irrelevant page.

A. 确保两个活塞伸出长度相等。

B. 确保两个作动筒同时伸出。

C. 确保同时放出两个活塞。

A. 用净水清洗内表面。

B. 用温水清洗外表面。

C. 用冷水清洗外表面。

A. 发动机滑油携带这些微粒，直到它们被油滤捕获。

B. 直到颗粒被滤芯过滤，发动机滑油才能将它们带走。

C. 发动机滑油将这些污染物带至滑油滤芯。

A. Continuing Airworthiness Programs may be prepared according to the related Federal Aviation Regulations for all types of general aviation airplanes and components.

B. All types of general aviation airplanes and components are certified by the applicable Federal Aviation Regulations which require the preparation of Continuing Airworthiness Programs.

C. Continuing Airworthiness Programs may be prepared for all types of general aviation airplanes and components certificated under the applicable Federal Aviation Regulations.

A. 扰流板的作用是使机翼上的阻力增加，升力减少,从而扰乱流经该机翼上表面的平滑气流。

B. 扰流板的作用是扰乱流经机翼上表面的平顺气流，从而使此机翼上的阻力增加，升力减少。

C. 扰流板的作用是增加机翼上的阻力，造成升力减少,进一步干扰流经该机翼上表面的光滑气流。

A. 在开始检查前，你应该拆除接近门和整流罩。

B. 在开始检查前，你应该拆除登机门和整流罩。

C. 在开始检查前，你应该拆除舱门和组件。