A marine sextant has the index arm set at zero and the reflected image of the horizon forms a continuous line with the actual image. When the sextant is rotated about the line of sight the images separate. The sextant has（）.
1、The server host1 has been set up as a
The server host1 has been set up as a backup system with the following /etc/exports./backups -rw.How can a second server regularly use this di...
2、A man has suffered a burn on the arm.
A man has suffered a burn on the arm. There is extensive damage to the skin with charring present. How is this injury classified using standard medical terminology?（）ADermal burnBThird-degree burnCMajor burnDLethal bur
3、The desirable properties of a marine f
The desirable properties of a marine fuel oil should include（）Ahigh flash point and high viscosityBlow flash point and high viscosityClow heating value and high sulphur contentDhigh heating value and low sulphur content
4、The marine diesel engine is a type of
The marine diesel engine is a type of diesel engine used on ships The （） of its operation is not very difficult to understand.AprincipleBprincipalCcauseDcase
5、The plan has set off（） controversy.
The plan has set off（） controversy.Aa storm ofBa stone ofCa rock ofDa blow of
6、The first indications a mariner will h
The first indications a mariner will have of the approach of a warm front will be （）.Alarge cumulonimbus (thunderclouds) building upBhigh cirr...