原子吸收光谱法中的物理干扰可用下述哪种方法消除。（）。
A.释放剂
B.保护剂
C.标准加入法
D.扣除背景
参考答案：C
With respect to long-lived assets, which of the following statements is least accurate The cost model for long-lived assets:
A. must be used under U. S. GAAP.B. must be used for all classes of intangible assets under IFRS.C. may be used for some classes of assets while the revaluation model may be used for other classes under IFRS.
相同类型的电缆可以直接连接。（）
