按照接受记录光谱方式的不同，原子发射光谱分析可分为看谱分析法、摄谱分析法、光电直读光谱分析法三种。
参考答案：对
根据句意及首字母提示完成句子。
1. We should take a p ______ examination every year. It's good for our health.
2. He was much a _____ by the sad news.
3. He a _____ some words to explain his idea.
4. I find it f _____ that I can't speak other languages.
5. I didn't r _____ I had made a mistake until he told me.
中国海区水上助航标志制度规则规定，用于标示禁航区的专用标的闪光节奏为（）。
A．莫尔斯信号“Q”
B．莫尔斯信号“P”
C．莫尔斯信号“O”
D．莫尔斯信号“K”
