更多"（） is used for cylinder and cylinde"的相关试题:
[单项选择]Diesel engine cylinder head test cocks are used to （）
A. check cylinder lubrication
B. connect the pressure indicator pressure
C. test cylinder heads
D. connect the exhaust gas pyrometers
[单项选择]The cylinder head, cylinder liner and （） form the combustion chamber.
A. frame
B. piston
C. crankcase
D. explosion plate
[单项选择]A diesel engine cylinder head can crack as a result of （）
A. a leaking seal ring
B. heat transfer from exhaust valves
C. restricted cooling passages
D. overheated intake valves
[单项选择]Valves in the cylinder head of a diesel engine are opened by the direct action of the（）
A. exhaust pressure
B. valve spring pressure
C. rocker arm movement
D. wrist pin movement
[单项选择]In the cylinder head of a two-stroke/cycle diesel engine, valves are used for（）
A. air intake
B. a fuel outlet
C. cooling water inlets
D. exhausting combustion gas
[单项选择]One advantage of dry cylinder liners used in a diesel engine is the（）
A. lower thermal expansion rates than wet liners
B. greater heat transfer rate than wet liners
C. greater wear resistance than wet liners
D. procedure to replace dry liners is simpler than for wet liners
[单项选择]The cooling liquid used for the cylinder may be referred to as （）.
A. jacket water
B. make-up water
C. boiler water
D. flushing water
[单项选择]Fresh water is used for the cooling of cylinder jackets and （） of the marine diesel engine.
A. cylinder covers
B. lubricating space
C. crosshead
D. exhaust manifold
[单项选择]Head tank should be used to remove （） from cooling water.
A. scale
B. sludge
C. chemicals
D. air
[单项选择]The cylinder liner forming the cylinder wall and the inside of the water jacket is called a（）
A. dry liner
B. wet liner
C. jacket liner
D. corrugated liner
[单项选择]Cracks in cylinder and cylinder covers may （） from unequal heating.
A. make
B. cause
C. result
D. produce
[单项选择]On the top of the cylinder is mounted the cylinder cover which is pressed onto （） of the cylinder liner by means of nuts and studs.
A. the camshaft
B. the flange
C. the ridge
D. the bulge
[单项选择]The cylinder oil is pumped into the cylinder (via non-return valves) when the piston rings pass the lubricating orifices during （）
A. the upward stroke
B. the downward stroke
C. the power stroke
D. the suction stroke
[单项选择]emp表是雇员信息表，sal字段存放是的雇员的月薪，以下哪个变量可以存放sal类型的值（）
A. v_sal emp%rowtype;
B. v_sal emp.sal%type;
C. v_sal emp.sal.%type;
D. v_sal %type(emp.sal);
E. v_sal (emp.sal)%type;
[单项选择]To counteract these undesirable effects cylinder oils usually contain additives formulated to impart a high degree of （） and detergency.
A. salinity
B. alkalinity
C. acid
D. sanitary
[单项选择]Cylinder lubrication oil for low speed main propulsion diesel engines is admitted to each cylinder during （）.
A. the power stroke
B. the compression stroke
C. low load operation only
D. periods of standby
[单项选择]Which of the listed cylinder liner surface conditions indicates proper lubrication?（）
A. Dull black appearance
B. Bright appearance
C. Thin layer of lacquer
D. Thick oily film
[单项选择]Which of the diesel engine cylinder liners listed has internal cooling water passages?（）
A. Internally finned liner
B. Externally finned liner
C. Wet liner
D. Integral water-jacket liner
