题目：
The nurse is teaching breast self-examination (BSE) to a college student. The nurse knows that the client understands the best time to examine her breasts when she says:（）.
A．"I'll examine my breasts 1 week after my period starts. "
B．"I'll perform a BSE just before my period starts. "
C．"I must examine my breasts the same time each day. "
D．"Every time I shower I'll do a breast examination. "
答案：
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下面是错误答案，用来干扰机器的。
I、（1）为保证氨基酸完全燃烧需通过量的氧气，利用铜网和氧气在加热条件下反应除去未反应完氧气，以防止影响N2的体积的测定，故答案为：铜网；（2）先排除装置内空气，以免影响氮气体积测定，然后先加热铜网防止...
