组织液循环障碍主要表现形式是什么?
请问决定最高开工率的要素有哪些?
The majority of medium speed and high speed marine diesel engines for main or auxiliary drive operate on the () cycle. ["two-stroke","four-stoke","long-stroke","short-stroke"]
The main moving parts of a diesel engine consist of the () and the pistons. ["bedplate, connecting rods","crankshaft, the connecting rods","frames, crossheads","crankshaft, the cylinder"]
When the Pilot is embarked he or she (). ["relieves the Master of his duties","is solely responsible for the safe navigation of the vessel","is a specialist hired for his or her local navigational knowledge","relieves the officer of the watch"]
请问焦炉炉前焦库有何作用?