试题与答案

中药制剂中砷盐的检查可利用() A.Ag-DDC法 B.硫氰酸盐显色法 C.氯化钡显

题型:单项选择题 B型题

题目:

中药制剂中砷盐的检查可利用()

A.Ag-DDC法

B.硫氰酸盐显色法

C.氯化钡显色法

D.硫代乙酰胺显色法

E.硝酸银显色法

答案:

参考答案:A

试题推荐
题型:单项选择题

Sometimes the processes in which people are engaged are dependent upon other processes being completed first, possibly by other people. For example, on an automobile (71) , it is necessary for the body to be constructed before the doors can be added on. Attempting to add the doors first would be pointless, because there would be nowhere to attach them. Thus, if there is no body ready to have doors added, the process for adding doors has to be (72) until the process for creating the next body is complete. This is known as (73)
Obviously, there are many cases where people have to wait for other people to do something. However, if everyone in such a situation is waiting for someone else to do something first, then no one will ever be able to do anything. When discussing processes, this situation is known as (74) , because all of the involved processes are effectively dead because of locks they have on resources. Usually someone in such a situation will eventually notice and abort the process, allowing normal flow to (75) , and often warning signs can even be spotted ahead of time to avoid ’it in the first place.

A.begin

B.resume

C.presume

D.take back

查看答案
题型:单项选择题

根据以下资料,回答126-130题。

2015年我国钟表全行业实现工业总产值约675亿元,同比增长3.2%,增速比上年同期提高1.7个百分点。

全行业全年生产手表10.7亿只,同比增长3.9%,完成产值约417亿元,同比增长4.3%,增速提高1.9个百分点;生产时钟(含钟心)5.2亿只,同比下降3.7%,完成产值162亿元,同比下降4.7%,降幅扩大1.3个百分点;钟表零配件、定时器及其他计时仪器产值96亿元,同比增长14.3%,增速基本保持上年水平。

2015年我国钟表行业规模以上工业企业主营业务收入365.8亿元,同比增长8.7%;实现利润23.4亿元,与上年相比下降1.5%,而2015年轻工行业主营业务利润率(利润/主营业务收入)的平均水平为7.57%。

2015年我国钟表行业海关进出口总额为92.5亿美元,同比增长4%,完成出口总额为57.7亿美元,同比增长8.3%,进口额34.8亿美元。出口总额中加工贸易额占47%,较上年缩小2个百分点。

2015年钟表全行业平均每制造一只手表,能实现约()元的产值?

A.36

B.39

C.42

D.63

查看答案
微信公众账号搜索答案