A、 “力臂”是物体重心到基准面的水平距离。
B、 “力臂”是物体重心到参考面的垂直距离。
C、 “力矩”是物体中心到参考基准面的距离。
答案：A
A、 “力臂”是物体重心到基准面的水平距离。
B、 “力臂”是物体重心到参考面的垂直距离。
C、 “力矩”是物体中心到参考基准面的距离。
答案：A
A. 将车辆拉至规定的安全区域。
B. 将车辆拉至特定的、可以使用程序的区域。
C. 将车辆拉至可以使用标准程序的安全区域。
A. If none of the components are damaged, continue the procedure.
B. If none of the brackets are damaged, continue the procedure.
C. If none of the brackets are damaged, continue the task.
A. An annunciator device is displayed on the panel, which shows how it works.
B. If an annunciator panel is installed, explain how it operates.
C. If a display appears on the annunciator panel, it explains that how the system works.
A. 如果电瓶需要断电，则断掉电源。
B. 如果电瓶需要充电，则继续接通电源。
C. 如果需要更换电瓶，则接通电源。
A. If the hydraulic pump turns to generate pressure of 3000 psi, use the electric pump.
B. If the hydraulic pump fails to generate pressure of 3000 psi, use the electric pump.
C. If the hydraulic pump turns to supply pressure of 3000 psi, use the electric pump.
A. Clamps should be spaced at intervals not exceeding 24 inches. Clamps on wire bundles should be selected so that they have a snug fit without pinching wires.
B. Pins should be spaced at intervals not exceeding 24 inches. Pins on harness should be selected so that they have a snug fit without pinching wires.
C. Pins should be spaced at intervals not exceeding 24 inches. Pins on harness should be selected so that they have a snug fit without scratching wires.
A. This format may be used in integra or in part.
B. This format may be used in its entirety or in part.
C. This format may be used in its tacticallity or in part.
A. 燃油泵安装在隔框附近。
B. 燃油泵与隔框安装紧密。
C. 滑油滤安装在机匣附近。
A. Make sure that you quarantine the removed insulation material.
B. Make sure that you recycle the removed insulation material.
C. Make sure that you quarantine the removed composite material.
A. 如果无法安全实施这一机动，应提供不要尝试此机动的警告。
B. 如果一个动作不能安全完成，要有警告不要完成这个动作。
C. 如果不能完成一个动作，要提供一个安全警告。
