For an ordinary four-stroke engine the exhaust valves open （）.
In motor ship, （） is often used to recover some of the heat carried in the exhaust gases from the main engine.
In an engine with air inlet valve and exhaust valve on its cylinder heads the fresh air will enter into the cylinder （） and the gases exhaust （）, there being an adequate overlap between the inlet opening and the exhaust closing.
The process to remove exhaust gases by blowing in fresh air is called （）.
International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code) is a part of（）
A two-stroke diesel engine exhaust temperature will be lower than a four-stroke diesel engine of the same displacement because the （） (1) MEP is lower and the scavenging air is cooling the exhaust gases (2) valve overlap in a four-stroke
Exhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine by（）
The exhaust valve opens before bottom dead center in a four stroke engine to（） Ⅰ.allow for blow down Ⅱ.Reduce pumping losses
（）is a caing used for exhaust pipe from the engines.
（） is the removal of exhaust gases by blowing in fresh air.
The exhaust gases in a supercharged two-stroke/cycle diesel engine are expelled from the cylinder by （）
An attacker is launching a DoS attack on the Company network using a hacking tool designed to exhaust the IP address space available from the DHCP servers for a period of time. Which procedure would best defend against this type of attack？ （）
A two-stroke diesel engine exhaust temperature will be lower than a four-stroke diesel engine of the same displacement because the （） (1) scavenging air is cooling the exhaust gases (2) exhaust cycle time is longer
In a diesel engine exhaust system, the cooling of the exhaust gases below their dew point, will result in （）
For an ordinary four-stroke diesel engine the exhaust valves close （）.
Forcing the exhaust gases form the cylinder of an operating diesel engine with the aid of a blower is known as （）
The boiler is fired （） the demand for steam exceeds that available from exhaust gas heating.
A pumproom is suspected of accumulating gases after a ventilation machinery breakdown. Where should the combustible gas indicator case be placed when testing the pumproom atmosphere for combustible gases? （）
Which of the turbo-charging methods listed directs the exhaust gases to the turbine at fairly uniform velocity and pressure?（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
In a two-stroke/cycle diesel engine, the exhaust gases are expelled from the cylinder by the（）
According to the way the energy of the exhaust gases is utilized, pressure-charging can be divided into two main systems, namely, the constant-pressure system and （）.
The exhaust valve opens before bottom dead center in a four stroke engine to______Iallow for blow down IIReduce pumping losses
The key greenhouse gases emitted by human activities remain in the atmosphere for_______（
