主页
学科
搜索
账户
常见问题
当前学科:循环水操作工初级
题目:
问答题
活性污泥能够去除污水中有机物,从而起到净化作用的原因是什么?
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:
下列关于营改增业务适用5%征收率有关说法,不正确的有()。
空预器着火的处理?
归档文件编目,来文与复文为一件时,应对()进行编目
with the view of, out, draw your attention to, in, requested, somewhat, somehow, that, conform to, avoid, turn out, make out Dear Sirs, We thank you for your telegram duplicating your order of October 12 for 500 doz.Rubber Shoes. Although the prevailing quotations are(1)higher, we win accept the order on the same terms as before(2)encouraging business. As(3)in your previous letter, we have made(4)our Sales Confirmation No.300(5)duplicate and shall thank you to send back one copy duly countersigned. We are glad to know that a letter of credit will be established in our favour immediately.However we would like to(6)the fact(7)the stipulations in the relative credit should strictly(8)the terms in our sales confirmation in order to(9)subsequent cable amendments. We appreciate your cooperation and trust that the shipment which is to be dispatched after receipt of the relative letter of credit, will(10)to your entire satisfaction.Yours faithfully,
下列类型基团极性最大的是()。
利用平滑滤波器可对图像进行低通滤波,消除噪声,但同时模糊了细节。一下哪项措施不能减小图像的模糊程度()。
解释轨道电路的原理?
人感染猪链球菌病例采集血清用于IgM检测的,第一次采集应在发病()内
以下哪些是抵押人所享有的权利()
自动扶梯应有哪些安全保护装置?