仪器检验法是根据食品中待测组分的()，利用仪器来测定其含量的方法。
A. 感官形貌性质
B. 生物生理特性
C. 溶解、凝聚性能
D. 物理、化学性质
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How do homeowners determine the reliability of a house-sitter？
A. They attend a house-sitter"s party.
B. They check house-sitter"s references.
C. They interview house-sitter"s friends.
D. They look at house-sitter"s transcripts.
Which of the following can be a substitute for the phrase "emanate from"？
A. Thrive on.
B. Account for.
C. Originate from.
Descend from.
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