最适合于寡核苷酸及其类似物的结构和序列分析的质谱仪有()
A.LC-MS
B.GC-MS
C.MALDI-MS
D.ESI-LC-MS
E.ICP-MS
参考答案:C, D
A mobile earth station in the maritime mobile-satellite service,which is located on board ship,is called().
A.an LES
B.an SES
C.a ship station
D.a Land Mobile Station
下面()不是炉内水处理所用药剂。
A、纯碱
B、火碱
C、硫酸钠