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【简答题】
用紫外分光光度法测定维生素B1的百分含量,两次测定结果分别为99.68%、98.22%,计算两次测定结果的相对偏差。《中国药典》2015年版规定本品按干燥品计算,含C12H17 CIN4OS·HCl不得少于99.0%,请问本品的含量测定是否符合规定?
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举一反三
【单选题】Which of the following material events after the reporting date and before the financial statements are approvedare adjusting events?(1) A valuation of property providing evidence of impairment in val...
A.
1, 2 and 4 only
B.
1, 2, 3 and 4
C.
1 and 4 only
D.
2 and 3 only
【简答题】绘制PLC的外部接线图,要求按照300PLC的接线图参考来绘制,请拍照上传提交。
【简答题】请绘制 NPN 型和 PNP 型与 S7-1200PLC 的接线图,并按绘制图进行接线调试 。
【单选题】Which of the following four statements about accounting concepts or principles are correct? 1. The money measurement concept is that items in accounts are initially measured at their historical cost. ...
A.
1 and 3
B.
1 and 4
C.
3 only
D.
2 and 3
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