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【单选题】
用酸水解测定样品脂肪含量时,下列说法正确的是( )A.
酸水解测得的是食品的游离态脂肪含量
B.
固体样品称量后，可直接加盐酸水解
C.
酸水解法适合于所有样品
D.
对于固体试样，称取后少量水，混匀后再加盐酸水解
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反馈参考答案：
举一反三
【简答题】如果a≠0且a、b互为相反数，则在下列各组数中不是互为相反数的一组是（ ） A． 3 a 与 3 b B． a 2 与 b 2 C．3a与3b D．a+1与b-1
【单选题】Some of our industrial products have been said advanced level.
A.
to reach
B.
to be reaching
C.
to have reached
D.
to have been reaching
【单选题】We might say our products have ______ warm reception everywhere and hope they will be able to your requirements.
A.
met, meet with
B.
met with, meet
C.
met, met with
D.
met with, met
【单选题】—Perhaps you have heard our products. Would you like to know something more? —_________________
A.
Sure. Go ahead.
B.
I don’t need anything.
C.
I‘ve heard lot about you.
【单选题】如果a＞b，且c＜0，那么在下面不等式中： （1）a+c＞b+c；（2）ac＞bc；（3） - a c ＞- b c ；（4）ac 2 ＞＜bc 2 ．成立的个数是（ ）
A.
1
B.
2
C.
3
D.
4
【单选题】The market competition is fierce, but our products have great advantage ______ quality and price.
A.
in place of
B.
in view of
C.
in case of
D.
in terms of
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