A、 That portion of the system which uses magnetic gyroscopic and inertia forces. Includes items such as gyro horizons, directional gyros, magnetic compasses, and magnetic heading systems, turn and bank, amplifiers, servos, and flight director, etc.
B、 That portion of the system which uses magnetic gyroscopic and inertia forces. Includes items such as gyro verticalizer, directional gyros, magnetic compasses, and magnetic heading systems, turn and bank, amplifiers, servos, and flight director, etc.
C、 That portion of the system which uses magnetic gyroscopic and external forces. Includes items such as gyro horizons, directional gyros, magnetic compasses, and magnetic heading systems, turn and bank, amplifiers, servos, and flight director, etc.
答案：A
A、 That portion of the system which uses magnetic gyroscopic and inertia forces. Includes items such as gyro horizons, directional gyros, magnetic compasses, and magnetic heading systems, turn and bank, amplifiers, servos, and flight director, etc.
B、 That portion of the system which uses magnetic gyroscopic and inertia forces. Includes items such as gyro verticalizer, directional gyros, magnetic compasses, and magnetic heading systems, turn and bank, amplifiers, servos, and flight director, etc.
C、 That portion of the system which uses magnetic gyroscopic and external forces. Includes items such as gyro horizons, directional gyros, magnetic compasses, and magnetic heading systems, turn and bank, amplifiers, servos, and flight director, etc.
答案：A
A. A maximum distance of 50 feet is required between consumable materials and the work area.
B. Keep flammable materials at a minimum distance of 50 feet from the work area.
C. Explosive materials must be kept at least 50 feet away from the work area.
A. This system still works after test.
B. Test shows no faults in this system.
C. This system is inoperative before test.
A. Make sure that the hydraulic oil can be cleaned.
B. Make sure that there is no dust in the hydraulic fluid.
C. Make sure that the hydraulic fluid is uncontaminated.
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. 降低天线以获得钢索接头。
B. 降低天线以接近电缆接头。
C. 降低风向标以接近钢索接头。
A. Jack was glad because he missed his plane
B. Jack was unhappy because he missed his plane
C. Jack was relaxed because he missed his plane
A. Sentence forms shall be simple and direct omitting discussions of theory except where essential for practical understanding and application.
B. The sentence form should be easy and direct, avoiding discussion of theory except when practical understanding and application are necessary.
C. The form of a sentence should be simple and direct, and the discussion of theory should be omitted in addition to practical understanding and application.
A. 将透明塑料环从电子锁的末端拉岀。
B. 将透明塑料环从电子锁的前端拉岀。
C. 将透明塑料环从电子锁的顶端拉岀。
A. RECORD
B. COPY
C. ENTER
A. The rest information could be shown on the cover plate.
B. Other information may be displayed on the cover.
C. The cover will show the other information.
