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【多选题】
燃烧的三要素是A.
热源
B.
可燃物
C.
氧气
D.
煤
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【简答题】Do not leave the camcorder exposed to high temperature．
【单选题】It is very likely that the high temperature of the ocean contributes to the increase of major storms.
A.
Y
B.
N
C.
NG
【单选题】Early injection timing is indicated by ______.
A.
high exhaust temperature and low firing pressure
B.
high exhaust temperature and high firing pressure
C.
low exhaust temperature and low firing pressure
D.
low exhaust temperature and high firing pressure
【判断题】Substances with high specific heat values do not change their temperature appreciably.
A.
正确
B.
错误
【单选题】The average temperature this year is _______ that of last year.
A.
as not high as
B.
not as high
C.
not as higher as
D.
not as high as
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