皮皮学，免费搜题
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【单选题】
病原微生物危害级别最高的是( )
A.
第一类病原微生物
B.
第二类病原微生物
C.
第三类病原微生物
D.
第四类病原微生物
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举一反三
【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
查看完整题目与答案
【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
查看完整题目与答案
【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
查看完整题目与答案
【单选题】竞争性抑制剂存在时，酶促反应的表观Km值的变化是
A.
增加
B.
不变
C.
减小
D.
以上都有可能
查看完整题目与答案
【单选题】As can be seen from the passage, Carry the Flame ______.
A.
was founded by Mr. Cavelier, a Vietnam veteran
B.
members come from all over the country
C.
riders are also members of Rolling Thunder
D.
hold the flame-lighting ceremony once a year
查看完整题目与答案
【单选题】竞争性抑制时,酶促反应表观Km值的变化是( )
A.
增加
B.
不变
C.
减小
D.
无规律
E.
以上都有可能
查看完整题目与答案
【判断题】对于切断肺结核传播途径最有效的措施是全民接种卡介苗。
A.
正确
B.
错误
查看完整题目与答案
【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
查看完整题目与答案
【单选题】竞争性抑制时,酶促反应表观Km值的变化是
A.
增大
B.
不变
C.
减小
D.
无规律
查看完整题目与答案
【单选题】Flame failure in an automatically fired auxiliary boiler can from a/an _________.
A.
incorrect electrode setting
B.
incorrect nozzle position
C.
clogged fuel nozzle
D.
broken high tension lead
查看完整题目与答案
相关题目：
【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
查看完整题目与答案
【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
查看完整题目与答案
【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
查看完整题目与答案
【单选题】竞争性抑制剂存在时，酶促反应的表观Km值的变化是
A.
增加
B.
不变
C.
减小
D.
以上都有可能
查看完整题目与答案
【单选题】As can be seen from the passage, Carry the Flame ______.
A.
was founded by Mr. Cavelier, a Vietnam veteran
B.
members come from all over the country
C.
riders are also members of Rolling Thunder
D.
hold the flame-lighting ceremony once a year
查看完整题目与答案
【单选题】竞争性抑制时,酶促反应表观Km值的变化是( )
A.
增加
B.
不变
C.
减小
D.
无规律
E.
以上都有可能
查看完整题目与答案
【判断题】对于切断肺结核传播途径最有效的措施是全民接种卡介苗。
A.
正确
B.
错误
查看完整题目与答案
【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
查看完整题目与答案
【单选题】竞争性抑制时,酶促反应表观Km值的变化是
A.
增大
B.
不变
C.
减小
D.
无规律
查看完整题目与答案
【单选题】Flame failure in an automatically fired auxiliary boiler can from a/an _________.
A.
incorrect electrode setting
B.
incorrect nozzle position
C.
clogged fuel nozzle
D.
broken high tension lead
查看完整题目与答案