试叙述JT-C机车信号记录器主要记录什么内容？
参考答案：
开关量信息：上/下行开关输入、机车载频切换装置状态、机车运行方向等；
机车信号输出信息：灯位、速度等级、制式、绝缘节、工作主机、主机工作状态等；
主机译码信息：信号载频、信号低频、信号幅度、故障代码、应答器信息、430信息、条件设置线等。
运用环境信息：主机箱内温度、110V供电状态；
辅助信息：记录器内时刻；来自TAX2箱的线路公里标、机车号、速度、时刻、信号机类型和编号、车站号、司机号等。
| 阅读理解。 | ||
Have you ever wondered?
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| 1. What information can we get from the first passage? | ||
[ ] | ||
| A. It is the jet stream that affects how fast airplanes fly. B. Planes go slower when they are moving with the wind. C. It takes more time to fly from NY to London than from London to NY. D. The jet stream always blows from the east to the west across the Atlantic. | ||
| 2. The word "shoot" underlined in the 2nd passage probably means "_____". | ||
[ ] | ||
| A. send for B. move quickly C. come out D. grow quickly | ||
| 3. It can be inferred that without gravity _____. | ||
[ ] | ||
| A. buildings and other structures would float away B. trees and buildings would not so easily fly off C. something around your head would not float away D. everything outside buildings would fly off into space | ||
| 4. Where can we most probably read this text? | ||
[ ] | ||
| A. In a research paper. B. In a short story. C. In a travel magazine. D. In a student's book |