【简答题】Business English Helps English play an important role in the workplace. When it is used in the correct and proper(31)_____, it can help to promote a career or a business. Some may(32)_____ or want to ...
【多选题】盛放过硝酸银溶液的容器应先用 清洗( )
【简答题】新生儿根据胎龄分类,分为____、____、____。
【单选题】“才者,德之资也;德者,才之帅也”是司马光在《资治通鉴》中主张选拔官吏的标准。用现在的观点来看,与公务员任用所坚持的( )原则相一致。
【简答题】由R、L和C组成的串联谐振电路,其谐振条件是______,此时谐振频率f 0 =______,谐振时复阻抗Z=______,其值最______,且为______。