主页
学科
搜索
账户
常见问题
当前学科：组织胚胎学
题目：
填空题
肠绒毛是由（）向肠腔突出而形成。
答案：
<查看本题扣1积分>
查看答案
答案不对？请尝试站内搜索
推荐知识点:
在限制出口技术的审查管理中进行贸易审查和技术审查，并决定是否准予出口的部门有（）
干漆的功效是（）
下列哪一项不属于疖的特点（）
访谈记录的类型主要有以下哪几种？（）
拆分单据可以修改什么字段？（）
铸锭和铸件中的气孔的危害性不包括（）。
Space is a dangerous place, not only because of meteors(流星) 【C1】______be-cause of rays from the sun and【C2】______stars. The atmosphere again acts【C3】______our protective blanket on【C4】______. Light gets through, and this is essential【C5】______plants to make the food which we【C6】______. Heat,【C7】______, makes our environments tolerable and some ultraviolet(紫外线的)rays penetrate the【C8】______. Cosmic(宇宙的)rays of various kinds come【C9】______the air from outer space, but【C10】______quantities of radiation from the sun are screened off.【C11】______men leave the atmosphere they are【C12】______to this radiation but their spacesuits or the walls of their spacecraft, if they are inside,【C13】______prevent a lot of radiation damage. Radiation is the greatest known danger to explorers in【C14】______. Doses of radiation are measured in【C15】______called "rems(雷姆)". We all【C16】______radiation here on earth from the sun, from cosmic rays and from radioactive minerals. The "【C17】______" dose of radiation that we receive each year is about too milli-rems; it【C18】______according to where you live, and this is a very rough estimate. Scientists have reason to think【C19】______a man can【C20】______far more radiation than this without being damaged; the figure of 60 rems has been agreed on.【C1】A．but alsoB．ever soC．as wellD．or so
甲公司于20×4年5月1日与客户签订一项咨询合同。合同规定，咨询期为1年，咨询费为50万元，分两次平均收取，第一次在项目开始时收取，第二次在项目完成时收取。估计总成本为30万元。项目于5月30日开始并收取第一次款项25万元。年末已发生费用26万元，同时得知该客户资金周转发生困难。甲公司年末应确认的劳务收入金额是（）万元。
依据GB4404.1-2008，长城以北和高寒地区的玉米种子水分允许高于13%，但不能高于（）。