题目内容

Not only _______ difficult to understand, but it was too long.

A. it was
B. it made
C. did it make
D. was it

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Only when the rain stopped _____ again.

A. the match started
B. does the match start
C. did the match start

In _______ and the lesson began.

A. he came
B. came he
C. he comes
D. comes he

使用现代雷达进行船舶导航时，为准确无误地识别雷达图像，首要的工作是（）。

A. 改变量程
B. 将自动功能改为手动
C. 掌握相应海区物标的特征和性质
D. 设置识别符号

用方位避险线航行时，将方位标尺放在避险方位上，此时雷达的显示方式应是（）。

A. 船首向上相对运动
B. 真北向上相对运动
C. A或B均可
D. A或B均不可