logo - 刷刷题
下载APP
【单选题】

饲料中( )测定是可用乙醚先把其浸提出来,然后加以定量。

A.
粗蛋白质
B.
粗脂肪
C.
粗灰分
D.
粗纤维
举报
题目标签:测定定量乙醚
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】测定润滑油机械杂质的苯废液应()。

A.
倒入水池中
B.
倒入封闭容器中,进行回收
C.
倒入废液罐中
D.
倒入废油中

【单选题】常用的这些检测系统中,哪个检测器主要测定有机磷的农药( )

A.
光离子化检测器(PID)
B.
氢焰光度检测器(FID)
C.
电子捕获检测器(ECD)
D.
火焰光度检测器(FP)

【单选题】Part ADirections: Read the following four texts.Answer the questions below each text by choosing A, B, C or D.(40 points)The long year of food shortage in this country have suddenly given way to appar...

A.
The abundant food supply is not expected to last
B.
Britain is importing less food
C.
Despite the abundance, food prices keep rising
D.
Britain will cut back on its production of food