A、 Most material of the radar scope is fiberglass.
B、 Most of the material in the radome is fiberglass.
C、 Most of the material in the radar cap is fiberglass.
答案：B
A、 Most material of the radar scope is fiberglass.
B、 Most of the material in the radome is fiberglass.
C、 Most of the material in the radar cap is fiberglass.
答案：B
A. Adjust the longitudinal trim system.
B. Adjust the lateral trim system.
C. Adjust the vertical balancing system.
A. Use protective goggles when you do work on fire extinguishers.
B. Ensure that you wear protective clothes while performing tasks on fire extinguishers.
C. Use protective gloves when working on fire extinguishers
A. 电源接通后再打开外壳。
B. 电源接通前不要打开外壳。
C. 电源接通时不要打开外壳。
A. Clean window using much quantities of soap and water.
B. Clean window using liberal quantities of soap and water.
C. Clean window with large quantities of soap and water.
A. You can use all standard English parentheses except the colon.
B. You can use all standard English contraction marks except the hyphen.
C. You can use all standard English punctuation marks except the semicolon.
A. Solenoid valves shall be shown with a notation. The notation indicates the spring is loaded by the valve to the open or closed position.
B. Solenoid valves shall be shown with a symbol. The valve indicates whether the valve is spring-loaded to the open or closed position.
C. Solenoid valves shall be shown with a mark. The mark indicates whether the valve is spring-loaded to the open or closed position.
A. 如果杠杆锁定电磁阀在锁定位置失效，你可以移动起落架控制杆到向上的位置与并用杠杆锁定覆盖触发器。触发器缩回控制杆向前的部分，这样它可以清除杠杆锁定机制。
B. 如果起落架控制手柄锁电磁阀在锁定位出现故障，可通过手柄锁超控触发器将控制手柄移动到向上位置。触发器将控制手柄的前半部分收回，这样就解除了手柄的锁定装置。
C. 如果杠杆锁定电磁阀没有处于锁定位置，则在手柄锁定超控触发器情况下将起落架控制手柄移动到向上位置。 触发器将控制杆的前部缩回，从而解除控制杆锁定机制。
A. 技术动词既可以用作动词，也可以用作名词。
B. 技术动词只能用作动词，不能用作名词。
C. 技术动词和动词的用法相同，与名词不同。
A. 必须要注意不要损坏防火墙罩。
B. 小心损坏火墙盖子。
C. 核心必须要带走以不损坏防火墙罩。
A. 将O形环安装在锥形轴承的内部凹槽中。
B. 将O形环安装在圆柱形轴承的中部凹槽中。
C. 将O形环安装在球形轴承的内部凹槽中。
