首页/ 题库 / [名词解释题]两侧对称的答案

两侧对称

名词解释题
2021-09-17 17:02
查看答案

正确答案

通过动物体的中央轴只有一个对称面将动物体分成左右相等的两部分,也称左右对称,它是动物由水生发展到陆生的重要适应。


试题解析

相关题目
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.

biomembrane,or biological membrane (生物膜)
苔藓动物门、腕足动物门、箒虫动物门可能介于只有次生体腔的原口动物和后口动物之间的一类动物。()
扁形动物与纽形动物均是()对称、()胚层,出现了()而尚未出现()的动物。
根据什么说扁形动物门比腔肠动物门高等?
扁形动物门划分为哪几个纲?其划分的主要依据是什么?
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。
扁形动物门的主要特征是什么?根据什么说它比腔肠动物高等(要理解两侧对称和三胚层的出现对动物演化的意义)。
苔藓动物门中常见的动物是()。
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.
系统中雷达状态包括Unknown、Operational(or ON)、Failed(or OFF)、Detached。
The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire,()the claimant proves that the fire arose from fault or neglect on the part of the carrier,his servants or agents.
Shutdown price(or point,or rule) 停业价格(或停业点、停业原则)
翻译:With Average or With Particular Average(WA or WPA)()
辐射对称和两侧对称
广告位招租WX:84302438

免费的网站请分享给朋友吧