A、 In such cases, the introduction should notice the systems related in the manual，manufacturers may also choose to group related systems where the simplicity of the product permits.
B、 In such cases, the introduction should note the systems covered in the manual，manufacturers may also choose to group related systems where the simplicity of the product permits.
C、 In such cases, the introduction should note the systems comprised in the manual，manufacturers may also choose to divide related systems if the product is simple enough.
答案：B
A、 In such cases, the introduction should notice the systems related in the manual，manufacturers may also choose to group related systems where the simplicity of the product permits.
B、 In such cases, the introduction should note the systems covered in the manual，manufacturers may also choose to group related systems where the simplicity of the product permits.
C、 In such cases, the introduction should note the systems comprised in the manual，manufacturers may also choose to divide related systems if the product is simple enough.
答案：B
A. Use the clean solvent again to leave the oils on the surface.
B. If necessary, clean the oils by applying clean solution.
C. Remove the oils, if necessary, by applying clean solvent again.
A. 每一页都必须载明原始事件日期，直到修订，修订时，也必须载明最新修订的事件日期。
B. 每一页都必须标明原始版本的出版日期，直到修订为止。当有修订时，也必须标明最新修订版的出版日期。
C. 每一页都必须标明原刊出版到修订的日期，修订时，也必须标明最新修订版的出版日期。
A. 如果部件跌落，有可能会造成轻微的损坏。
B. 如果部件掉落，可能会造成永久性的损坏。
C. 部件永久性的损坏可能是由掉落造成的
A. 停止测试2秒钟
B. 2秒后启动测试
C. 2秒后终止测试
A. 当释放液压时，活门按顺序打开。
B. 当液压被释放后，顺序活门移动到开位。
C. 当液压增压时，要按顺序移动来打开活门。
A. These buses consume power directly from the battery.
B. These buses accept the direct current of battery.
C. The battery supplies power directly to these buses.
A. Procedures for handling malfunctions or other abnormalities that are not emergent, or potentially emergent may be delayed in this section.
B. This Section may cover procedures for handling malfunctions or other deviations that are not of emergency nature, or involve a potential emergency that may be handled later.
C. This Section may cover procedures for handling malfunctions or other deviations that are not emergent, or involve a potential emergency that may be deterred.
A. 控制方向舵和方向舵襟翼位置和移动的系统部分。包括诸如方向舵踏板、襟翼控制轮、钢丝绳、减压器、链接件、控制面、位置指示器等相关部件（视具体情况而定）。
B. 控制桨和桨翼位置和移动的系统部分。包括诸如桨踏板、襟翼控制轮、电缆、增压器、链接件、控制面、位置指示器等相关部件（视具体情况而定）。
C. 控制方向舵和方向舵配平片位置和移动的系统部分，包括诸如方向舵踏板、配平片控制轮、钢索、助力器、连接件、操纵面、位置指示器等相关部件（视具体情况而定）。
A. You can combine the drains into three primary categories.
B. You can divide the drains into three primary groups.
C. Dividing the drains into three primary groups is an ill-advised option.
A. Adjust the longitudinal trim system.
B. Adjust the lateral trim system.
C. Adjust the vertical balancing system.
