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【单选题】
行贿罪是指为谋取( )，给予国家工作人员以财物的行为。A.
不合法利益
B.
不正当利益
C.
正当或者不正当利益
D.
正当利益
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【简答题】The Olympic flame: The Olympic flame is a symbol carried over from the ancient Olympics, where a sacred (神圣的) flame burned at the altar（神坛）of Zeus throughout competition. It was finally reintroduced a...
【单选题】Flame screens are used to ______.
A.
contain flammable fumes
B.
protect firefightiers from flames
C.
prevent flames from entering tanks
D.
keep flame and sparks from getting out of an engine’s exhaust system
【单选题】A steady flame in a gas range is the result of ______.
A.
a burning velocity equal to the combustion wave
B.
fuel being supplied at the same rate as the combustion wave
C.
fuel being supplied at a higher rate than that of burning velocity
D.
a free flowing supply of air from the openings in the head of the burner
【单选题】If the flame from combustion in the cylinder of a four-stroke engine past the piston into the space below, the accumulation of flammable mixture would be ignited, thus resulting in _____.
A.
the crankcase explosion
B.
lifting of the cylinder safety valve
C.
a scavenge fire
D.
opening of the manhole
【单选题】人类在空气稀薄、氧分压较低的高原上会出现代偿性呼吸增强,这主要依赖于何种感受器对呼吸中枢的兴奋作用
A.
中枢化学感受器
B.
主动脉弓压力感受器
C.
颈动脉体化学感受器
D.
主动脉体化学感受器
【单选题】人类在空气稀薄、氧分压较低的高原上会出现代偿性呼吸增强。这主要依赖于何种感受器对呼吸中枢的兴奋作用。
A.
中枢化学感受器
B.
主动脉体化学感受器
C.
颈动脉体化学感受器
D.
主动脉弓压力感受器
【单选题】When subjected to high heat from a open flame, or an electric heating element, which of the listed refrigerants will break down and produce phosgene gas?
A.
CO2
B.
Methyl chloride
C.
R-22
D.
Sulphur dioxide
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