What is indicated about Mr. Russel?
A. He is collaborating on a project.
B. He is purchasing a travel guide book.
C. He is drafting a research proposal.
D. He is attending a book fair.
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为女患者导尿时,如误入阴道应拔出消毒导尿管后再插。()
修饰方法参数的关键字ref和out的区别在于ref修饰的参数在调用方法之前就需要进行初始化。()