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【单选题】
我们通常将食品经高温灼烧后的残留物称( )。
A.
粗灰分
B.
水不溶性灰分
C.
酸不溶性灰分
D.
水溶性灰分
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【单选题】Los Alamos National Laboratory scientists are using a new technique to see fingerprints on surfaces that typically make them invisible. The method uses a technology called mini-X-ray fluorescence (荧光)...
A.
the powder used in the conventional methods
B.
images that can only be seen in computer
C.
a scanner that is connected to a computer
D.
the memory of any digital recorders
相关题目：
【单选题】Los Alamos National Laboratory scientists are using a new technique to see fingerprints on surfaces that typically make them invisible. The method uses a technology called mini-X-ray fluorescence (荧光)...
A.
the powder used in the conventional methods
B.
images that can only be seen in computer
C.
a scanner that is connected to a computer
D.
the memory of any digital recorders
参考解析：
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