Animals are ___ for the balance of nature. A. useful B. useless C. harmful D. bad 相关知识点: 试题来源: 解析 A。“useful”表示有用的,动物对于自然的平衡是有用的。“useless”是无用的,“harmful”是有害的,“bad”是坏的,都不符合动物在自然平衡中的作用。反馈...
Many people are working hard to save ___ animals. A. harmful B. endangered C. useful D. dangerous 相关知识点: 试题来源: 解析 B。“endangered”是濒危的,很多人努力拯救濒危动物。“harmful”是有害的,“useful”是有用的,“dangerous”是危险的,这三个选项不是人们努力拯救的对象。反馈...
trap climbers harmful or useful to animalsLANTENOIS ANDRE-PAULLANTENOIS ANDRE-PAUL
The article probes into the concept of harmful forestry plants and their harms to Shanxi and proposes some measure to prevent and control alien harmful plants. 文章探讨了林业有害植物的概念及其在山西省的危害,提出对外来有害植物的预防及管理对策。 3. By preliminary investigation, there are 14 speci...
plastic composition comprising at least one plastic including polyvinyl chloride (PVC), polyurethane and polyolefins, and at least one active substance mixture; (2) a cable sheath or tube comprising the plastic composition; and (3) use of active substance mixture for expelling harmful animals. ACTI...
plastic composition comprising at least one plastic including polyvinyl chloride (PVC), polyurethane and polyolefins, and at least one active substance mixture; (2) a cable sheath or tube comprising the plastic composition; and (3) use of active substance mixture for expelling harmful animals. ACTI...
Hemolymph from gastropods such as Haliotis tuberculata can be taken from the cephalic arterial sinus located in the anterior part of the muscle and again using a syringe [14]. 1.2. Hemocytes Hemocytes are the cells responsible for defending the organism from everything foreign and harmful to ...
We describe New piridilo carbamates of formula (i), procedures and intermediaries to obtain, to combat harmful animals yhongos compositions containing them.And the applications of these compounds and compositions.