更多"In some type of two-stroke engines,"的相关试题:
[单项选择]Some diesel engines are fitted with a thermometer in the cooling water outlet from each cylinderIf the cooling water temperature from all cylinders begins to rise above normal, you should suspect （）
A. increase blow-by in all cylinders
B. incomplete combustion in all cylinder
C. overloading in all cylinders
D. insufficient fuel delivery to all cylinders
[单项选择]Some diesel engines are supercharged with a （）
A. slam charger
B. turbocharger
C. fuel atomizer
D. fuel injector
[单项选择]Valve cages are used on some large diesel engines to （）
A. reduce wear on the valve stem
B. permit the use of alloy valve seat materials
C. reduce heat transfer from the valve seat
D. facilitate valve removal for servicing
[单项选择]Some medium and high-speed diesel engines require reduction gear units to provide a useful propeller speedIn most reduction gears, the bull gear（）
A. must churn the oil in the sump
B. is connected to the propeller shaft
C. is driven at the highest RPM
D. compensates for alignment variations between the engine and pinion gear
[单项选择]In some modern large diesel engines, which of the following is used as the support for the main bearings?（）
A. Bedplate
B. Block
C. Base
D. Sump
[单项选择]Vee-type engines have the connecting rods from two cylinders connected to each （） of the crankshaft.
A. throw
B. web
C. main bearing
D. deflection
[单项选择]An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of （）.
A. aeration of the oil
B. contamination of the oil
C. pump cavitation
D. spongy actuator movements
[单项选择]Main engines as well as auxiliary engines operating on heavy fuel should have continuous on the lubricating oil, either according to the bypass or batch principles（）
A. filtering
B. centrifuging
C. depositing
D. operating
[单项选择]Before the final examination, some students have shown（）of tension. They even have trouble in sleeping.
A. anxiety
B. marks
C. signs
D. remarks
[单项选择]Some pumps use packing as sealing glandThe gland should be （）.
A. slack enough to allow slight leakage of fluid
B. slightly clocked
C. brought up tight so as not to allow any leakage
D. fitted with a relief valve
[单项选择]There’s been some dirty work with the club accounts and some money is missing.（）
A. 俱乐部的帐目有鬼，有些钱不知去向。
B. 俱乐部的帐目有卑鄙的勾当，有些钱不知去向。
C. 俱乐部的帐目是吃力不讨好的工作，有些钱不见了。
[单项选择]Advise you（）engines．
A. stop
B. to stop
C. stopping
D. stopped
[单项选择]There we shall call at some ports（）and discharge some cargo.
A. to loading
B. be loading
C. loading
D. to load
[单项选择]Lubricating systems for diesel engines are usually designed to initially provide lube oil to the engine （）
A. camshaft beatings
B. main bearings
C. piston crowns
D. cylinder walls
[单项选择]Large marine diesel engines of crosshead construction generally have two systems of lubrication: a total loss system feeding the （） and a recirculation system lubricating the running gear and cooling the piston.
A. cylinder liners and piston rings
B. main bearings
C. crankpin bearings
D. turboblower
[单项选择]Auxiliary diesel engines can be automatically shut down as a result of （）
A. low lube oil temperature
B. low lube oil pressure
C. high exhaust temperature
D. high cooling water pressure
[单项选择]Although the crankshafts of medium diesel engines appear to be robust, they rely on the support of （） to develop their full strength.
A. the piston rods
B. the crank throws
C. the thrust bearings
D. the main bearings
[单项选择]Diesel engines obtain combustion air through turbo chargers，blowers，or（）.
A. air starters
B. carburetors
C. natural aspiration
D. air receivers
