A、 shock loading of an engine may arise from a repeat landing.
B、 shock loading of the engine can occur during a light landing.
C、 shock loading of the engine can occur during a heavy landing.
答案：C
A、 shock loading of an engine may arise from a repeat landing.
B、 shock loading of the engine can occur during a light landing.
C、 shock loading of the engine can occur during a heavy landing.
答案：C
A. 能防止自由运动的活塞在套筒中有划痕。
B. 刻痕能阻止活塞在套筒中的自由运动。
C. 刻痕能防止自由运动的活塞在套筒中。
A. control
B. continue
C. contents
A. 仪表必须与表格中的价值一致。
B. 指示必须与表格中的值一致。
C. 指示必须与桌子上的值一致。
A. Lift the cylinder above its installed position.
B. Lift the cylinder about its installedposition.
C. Increase the cylinder above installed position.
A. If there is hum from the loudspeaker,don't adjust the potentiometer.
B. Adjust the potentiometer unless hear a hum from the loudspeaker.
C. Adjust the potentiometer until the loudspeaker no longer hums.
A. Deflate the system before you disconnect the components.
B. Bleed the system before you disconnect the components.
C. Bleed the system before you interrupt the components.
A. DIM
B. DARK
C. ILLUMINATE
A. 应使用能产生黑白图像的打印格式来进行复制。
B. 应使用能产生黑白图像的打印形式来进行印刷。
C. 应使用能产生黑白图像的打印形式来进行复制。
A. Text may be prepared in one or two columns with or without justification
B. Text may be prepared in one and two columns with or without reason
C. Text may be prepared in one or three columns with or without
justification
A. 调节螺钉转动后,使压力平稳。
B. 每次转动调节螺钉后,使压力稳定。
C. 只要转动调整螺钉后,使压力稳定。
