焊接缺陷按其在焊接接头的部位,可分为()和()。
第9题
Failure of fuel injection is usually due to trouble in the ( )
A.exhaust valves
B.cooling water pumps
C.fuel injection pumps
第10题
Oil Record Book Part Ⅰ shall be provide to ( )
A.every oil tanker
B.every ship of 150 tons gross tonnage and above
C.every ship of 400 tons gross tonnage and above
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