问题
单项选择题
必须使用移线定位的场合是（）。
A．一个时刻只能获得一条船位线的情况
B．测天定位时
C．只有一个导航物标可用的时候
D．以上都是
答案
参考答案：A
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必须使用移线定位的场合是（）。
A．一个时刻只能获得一条船位线的情况
B．测天定位时
C．只有一个导航物标可用的时候
D．以上都是
参考答案：A
| 根据所给的汉语提示，转换下列句型 |
| 1. You're a student. I'm a student, too. (合并成一句) __ _ you ____ I are students. 2. American fast food seems to be the most popular in the world. (改为同义句) ___ __ _ that American fast food is the most popular in the world. 3. After he said these words, he went out of the room. (改为同义句) _ __ these__ _, he went out of the room. 4. Something is wrong with him. (改为否定句) __ _ is ___ wrong with him. 5. You'd better finish your homework today. (改为否定句) You'd____ ___ your homework today. |