油中溶解气体检测时,色谱柱对所检测组分的分离度应满足()分析要求。
A.定量
B.定性
C.诊断
D.判断
参考答案:A
-Would you like to see a film with us this evening?
-I'd like to.But I can't________the time because I have to finish my composition.[ ]
A.pass
B.take
C.afford
D.spend
世界是物质的,物质存在的形式有:实物和场,而实物是由分子和原子组成的,原子直径的大小为()厘米
A.10-1
B.10-8
C.10-6
D.10-4