【单选题】具有同步置数功能计数器是指( )的计数器
【判断题】在现代市场经济国家,大部分企业对直接融资手段选择顺序是:内部融资——发行股票——发行债券。
【判断题】异步计数器是指各个触发器状态变换的时间先后不一。
【判断题】计数器的异步清零端是指计数器清零端有效时不需要时钟端的配合
【判断题】在现代市场经济国家,大部分企业对直接融资手段选择顺序是:内部融资——发行股票——发行债券。
【判断题】异步计数器就是指各触发器状态翻转用不同时钟脉冲控制的计数器。( )
【单选题】From the abstract, what is the conclusion of this article?
A.
Overall 10 publications with clinical trials could be identified. Their clinical outcome was compared with that laboratory bond strength studies.
B.
Clinical data provide strong evidence that air-abrasion at a moderate pressure in combination with using phosphate monomer containing primers and/or luting resins provide long-term durable bonding to glass-infiltrated alumina and zirconia ceramic under the humid and stressful oral conditions.
C.
As simple and clinically reliable bonding methods to oxide ceramics exist, the rationale for development of alternative bonding methods might be reconsidered especially when these methods are more time consuming or require rather complicated and/or technique sensitive procedures.
D.
Conducting a PubMed database search in May 2014 for articles dealing with the resin bond to dental zirconia ceramic reveals an astonishing increase of research being published in the last two decades years.