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无颌类
时间:2021-09-18 08:53
关键词:
脊索动物
生物学
答案解析
<p> 无上、下颌和成对附肢的脊椎动物。如圆口纲动物。</p>
相关问题
boost的意思是:help or encourage to increase or improve
eloquent的意思是:fluent or persuasive in speaking or writing
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
A cabinet or space containing the controls or valves for the fixed firefighting system must be().
A cabinet or space containing the controls or valves for the fixed firefighting system must be().
最新问题
何谓被囊类、无头类、原索动物、有头类、无颌类、有颌类、无羊膜动物和羊膜动物?
biomembrane,or biological membrane (生物膜)
无颌类
由于不同实验动物的生物学特性各不相同,不同种动物或同一种动物不同品系之间对同一实验处理可能产生(),因此,对实验动物生物学的研究是至关重要的基础性工作。
Mainly east 3 or 4 partly cloudy to overcast occasional rain()slowly south moderate or good.
()any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local quarantine officer must be notified immediately.
Should any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local Quarantine Officer must be()immediately.
Masters are()solely responsible for all damages or accidents of whatever kind resulting from the navigating or handling of their vessels by day or by night.
If he is a common carrier,he is absolutely responsible to the owner of the goods carried ()any loss or damage to them unless caused by an Act of God or the Queen’s enemies,or the inherent vice in the goods themselves,or the negligence of the owner of the goods,or a general average sacrifice.
系统中雷达状态包括Unknown、Operational(or ON)、Failed(or OFF)、Detached。
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