原子吸收光谱定量分析的基本关系式是A=KC,导致标准曲线弯曲的主要因素是()。
A.基体效应的存在
B.化学干扰
C.光谱干扰
D.火焰温度
参考答案:A, B, C
注射液除菌过滤可采用
A、细号砂滤棒
B、6号垂熔玻璃滤器
C、0.22μm的微孔滤膜
D、醋酸纤维素微孔滤膜
E、钛滤器
According to this passage, which of the following best describes the three stages in Cezanne's painting style from the earliest to the latest
A.Romanticism, realism, impressionism.
B.Romanticism, impressionism, constructivism.
C.Romanticism, realism, constructivism.
D.Realism, romanticism, impressionism.