某天体上中天时,其地方时角等于(),半圆方位等于(),位置角等于()。A.180°;

题型:单项选择题

问题:

某天体上中天时,其地方时角等于(),半圆方位等于(),位置角等于()。

A.180°;0°;180°

B.0°;180°;180°

C.0°;0°;0°

D.0°;0°;180°

考点:海船船员考试天体视运动天体视运动题库
题型:单项选择题

根据对话内容,从对话后的选项中选出能填入空白处的最佳选项.选项中有两项多余选项.

小题1:——Can you help me?

——Sure, what’s the problem?

——____81___.

小题2:——Well, how about San Francisco? We went there last year and had a great time.

——   82  

小题3:——Well, there is Golden Gate Bridge of course, and Golden Gate Park. It’s a really big park. You can go for long walks or take a rest in the Japanese Tea Garden. It’s beautiful there.

——   83   

小题4:——There is also a place called Fisherman’s Wharf. That’s really popular with tourists. There are lots of shops, cafes and restaurants. And from there you can go on a boat trip to Alcatraz. You know, it’s a small but very beautiful island.

——   84  

小题5:——No, you can’t stay on the island; there aren’t any hotels. You can only go for the day. I think I’ve still got a book about San Francisco. I can lend it to you.

——   85   

A. What can you do there?

B. Oh, great! What a great place to stay in!

C What an idea! What is the best time to go there?

D. I can’t decide where to go for the holiday-----any ideas?

E. Thanks a lot. San Francisco, here I come!

F. Hmm, that sounds good.

G. How can I go there?

题型:单项选择题

油藏在弹性驱动方式时,油层内的含流体饱和度一般()。

A、不发生变化

B、要发生变化

C、要逐渐下降

D、要逐渐上升

题型:单项选择题

就借词的方式而言,“浪漫主义”“冰淇淋”“马克思主义”等属于()。

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SOLAS公约强制规定的求救信号有()

①红星火箭

②手持火焰信号

③漂浮烟雾信号

④火箭降落伞火焰信号

A.①②③

B.②③④

C.①②③④

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在地面数据+灯型限速运行模式下,运行监控装置将按照预先输入的地面数据和灯型限速取最低值的原则,控制车辆的()。

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