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【简答题】
生长因子 / 营养缺陷型
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皮皮学刷刷变学霸
举一反三
【单选题】During combustion, oxidized sulfur compounds can be converted to .
A.
sodium
B.
sulfate
C.
sulfide
D.
sulfur
【简答题】sulfur
【简答题】elemental sulfur ( )
【单选题】Sulfur is
A.
an element
B.
a compound
C.
a heterogeneous mixture
D.
a homogeneous mixture
【简答题】Sulfur has occasionally been found in the earth in an almost pure state.
【简答题】organic sulfur
【简答题】硫呼吸(sulfur respiration)
【单选题】The most common and stable allotrope of sulfur is __________.
A.
S
B.
S2
C.
S4
D.
S8
E.
Sulfur does not form allotropes