更多"What are the symptoms of sun stroke"的相关试题:
[单项选择]Symptoms of heat stroke are().
A. cold and moist skin,high body temperature
B. cold and dry skin,low body temperature
C. hot and moist skin,high body temperature
D. hot and dry skin,high body temperature
[单项选择]The effective stroke of a constant-stroke, individual, fuel injection pump is varied by the ().
A. control rack
B. delivery valve
C. governor speed
D. plunger crossbar
[单项选择]During the power stroke of a four-stroke/cycle diesel engine, most of the side thrust of a trunk-type piston is absorbed by the()
A. piston skirt
B. pinion
C. crosshead
D. compression rings
[单项选择]Compared to four-stroke/cycle engines, two-stroke/cycle diesel engines have the disadvantage of ()
A. less even torque
B. higher cylinder head temperatures
C. fewer power strokes per revolution
D. greater weight/size requirements
[单项选择]Symptoms of sea sickness include().
A. fever and thirst
B. nausea and dizziness
C. stomach cramps and diarrhea
D. reddening of skin and hives
[单项选择]Symptoms of sugar diabetes include().
A. increased appetite and thirst
B. decreased appetite and thirst
C. gain in weight
D. elevated temperature
[单项选择]After sending a message describing the symptoms of an ill crew member,you receive a message containing the code MRL. This means “()”.
A. Apply ice-cold compress and renew every 4 hours
B. Commence artificial respiration immediately
C. Give enema
D. Pass catheter into bladder
[单项选择]The usual symptoms of cavitation in a centrifugal pump is ().
A. noise and vibration
B. an increase in discharge pressure
C. an increase in suction pressure
D. lifting of the relief valve
[单项选择]The boat command that means complete the stroke and level the oars horizontally with the blades trimmed fore and aft is().
A. Oars
B. Up oars
C. Way enough
D. Hold water
[单项选择]Each cylinder in a two stroke cycle engine experiences combustion().
A. once each crankshaft revolution
B. twice each crankshaft revolution
C. every other crankshaft revolution
D. every fourth stroke
[单项选择]According to the principle of two stroke diesel engine, what is the number of its efficient work stroke per revolution?()
A. 1/2
B. 1
C. 2
D. 3
[单项选择]According to the principle of four stroke diesel engine, what is the number of its efficient work stroke per revolution?()
A. 1/2
B. 1
C. 2
D. 3
[单项选择]
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
A. (1) only
B. (2) only
C. both (1) and (2)
D. neither (1) nor (2)
[单项选择]In the suction stroke, the crankshaft is rotating clockwise and the piston is moving () the cylinderThe inlet valve is () and a fresh charge of air is being drawn or pushed into the cylinder by the turbocharger.
A. up;opened
B. down;open
C. up;closed
D. down;closed
[单项选择]Two-stroke engine turbocharging is achieved by two distinct methods, () termed the constant pressure and the pulse system.
A. respectable
B. respectful
C. respective
D. respectively
[单项选择]The delivery rate of a variable stroke axial piston hydraulic pump is controlled by varying the position of the ().
A. slide block
B. tilting box
C. pintle
D. reaction ring
[单项选择]Turbocharged four-stroke/cycle diesel engines utilize valve overlap for().
A. improving cylinder scavenging
B. preheating the combustion chamber
C. reducing air charge density
D. preventing valve wear