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【简答题】
野外化学成分检测中,可用感官法鉴别。 1把植物原料揉碎后,嗅其有无芳香气味。——检测( ) 2将种子和果实放在滤纸上压碎,稍干后看纸上有无透明的油迹,根据油迹的大小还可以估计含油的多少——检测( ) 3用无锈的切开检验材料,如果小刀及材料断面很快变成蓝黑色,说明含( ),不变黑色,说明不含。 4味苦 的多含( ); 5味涩 的多含( ); 6味酸 的大多含( ); 7色黄 的多含( )
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皮皮学刷刷变学霸
举一反三
【单选题】Greenspan is aware of these problems, but he doesn't seem to believe there was any way he could have done__________ about them.
A.
anything
B.
something
C.
nothing
D.
everything
【单选题】He doesn't seem to be able to do it,______I thought he could.
A.
though
B.
since
C.
if
【简答题】定密监督的方式主要包括()。 A.定密检查 B.法定定密责任人的监督 C.定密统计 D.定密核查
【简答题】请解释同密和多密模式。
【单选题】He doesn't seem to be able to ______ any interest in his studies.
A.
make up
B.
work up
C.
turn up
D.
use up
【单选题】He doesn't seem to be able to do it, ______ I thought he could.
A.
though
B.
since
C.
if
D.
because
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