A grease gun is generally used to lubricate a ().
A grease gun is generally used to lubricate a ().
Which precaution should be taken when testing a line throwing gun?()
When a vessel signals her distress by means of a gun or other explosive signal,the firing should be at intervals of approximately().
The suspect's fingerprints on the gun were the main()against him.
If you hear the firing of a gun at one minute intervals from another vessel,this indicates that().
()是由“GUN’sNotUnix”所递归定义出的首字符缩写语。