警号含义现在警号都是两个英文字母加上4个数字.BA开头是保安,XJ是协警,那么GB开始表示的是什么意思呢?

请写出下列短语的类型
1.过故人庄 2.更加坚强 3.干劲十足 4.文化繁荣 5.春雨连绵 6.说虎 7.警号长鸣 8.草木荣枯 9.实现理想 10.音色美丽 11.掌握规律 12.好得多 13.休息一下 14.交流经验 15.绞尽脑汁 16.争取民主 17.绿树成荫 18.无比优越 19.克服困难 20.养成习惯 21.驾驶汽车 22.耕种土地 23.亲切关怀 24.观赏景物 25.学习努力 26.指挥交通 27.建造大楼 28.修改文章 29.学习外语 30.草长莺飞 31.赴汤蹈火 32.横渡长江 33.走过铁公所的时候 34.许多人站在布告牌前
实在是不会啊！！！好心人帮忙！！~~~

Ansys 做螺栓接触分析的时候出现的7个错误和警号，求大神解决~
1. The behavior of contact elements specified by real constant 27 are not
consistent. Some of elements belong to a rigid surface, while others
belong to a deformable surface.
2. ANSYS could not find attached solid element for contact element 34461.
Check the element connectivity data.
3. Some target elements on target surface specified by real constant set
16 belong to symmetric contact (e.g. 15), some do not.
4. The closed gap/penetration may be too large. Increase pinball if it is
a true closed gap/penetration. Decrease pinball if it is a false one.
5. There are 100 small equation solver pivot terms.
6. The value of UY at node 31190 is 1.113222667E+10. It is greater than
the current limit of 1000000. This generally indicates rigid body
motion as a result of an unconstrained model. Verify that your model
is properly constrained.
7. *** MESSAGE CONTINUATION ---- DIAGNOSTIC INFORMATION ***
If one or more parts of the model are held together only by contact
verify that the contact surfaces are closed. Also make sure that
there are constraints (or friction) in the sliding direction even if
no load is applied in that direction. You can use the CNCHECK command
to check the initial contact status in the SOLUTION module.

血型,公安局（警察局）,警号（警察编号）,身分证号,这四个词语最标准的英文缩写是什么?谢谢!
“血型”的英文有blood group和blood type,我去查询了下,缩写也有BG和BT两种,不知道哪种才是正确的?
另外,Police Department,Police Station,Police Office这三个词都有警察局的意思,但是之间的具体差别在哪里呢?分别是在哪些情况下使用的呢?那么,“公安局（警察局）”的缩写应该是“PD”还是“PS”还是“PO”呢?请英语高手回答!谢谢!