【判断题】元搜索引擎是一种没有自己的数据库的搜索引擎。
【简答题】互联网最基本的即( )传播功能,比如电子公告板、超级链接、门户网站和 搜索引擎 。
【简答题】下图是耳的结构模式图,据图回答问题。 (1)外界声波经【 】______收集,通过【 】______到达中耳引起【 】________振动,振动沿【 】________传导到内耳,刺激【 】________内的听觉感受器,产生________,神经冲动沿__________传导到________________,形成听觉。 (2)由于鼓室通过________与咽部相通,因此,鼻咽部发炎时,若不注意...
【单选题】Which of the following statements about the housekeeping gene is correct?
A.
Only expressed in specific tissue cells
B.
CpG island is highly methylated
C.
Constitutive expression
D.
Gene expression depends on the influence of the external environment
【单选题】The housekeeping is responsible for________ of all guestrooms in a hotel.
B.
neatness and cleanliness
【简答题】版权是授予______某种______的一种合法的保护形式。
【判断题】The housekeeping department is the place with probably the most intense interaction with the guest.