关于污泥机械脱水正确的是( )。A.污泥机械脱水是以过滤介质两面的浓度差作为推动力

题型:单项选择题

问题:

关于污泥机械脱水正确的是( )。

A.污泥机械脱水是以过滤介质两面的浓度差作为推动力

B.有真空吸滤法、压滤法和离心法等

C.在该过程中,滤液仅需克服过滤介质的阻力

D.常用的脱水机械有离心脱水机、带式压缩机、真空过滤机等

考点:注册公用设备工程师给水排水专业给水排水专业知识(上午)
题型:单项选择题

Researchers at the University of Arizona, led by Teresa Cummins, conducted an exploratory study on the online learning modules, designed to supplement hands-on classes taught by local experts and supported by an overview text, to help users increase their understanding of key concepts in the Arizona Master Watershed Steward program. They also sought to determine whether program participants would use the non-compulsory modules.

Their evaluation revealed that module users increased their understanding of key watershed concepts; participants in the evaluation demonstrated a 30 percent increase in content knowledge following module use. Additionally, 70 percent of participants retained this knowledge through a two-month follow-up test.

A follow-up survey showed that approximately half of the participants returned to the online modules on their own; several of these users returned several times and spent multiple hours per session. Comments from the follow-up survey suggested that the users accessed the site either as they had the time or as they needed the information.

Online usage statistics indicated participants continued to visit the site for many months following the modules’ release and advertisement. Though many visits were very brief (a single pageview; only a couple of seconds), visitors with many returns to the site and/or long visits appeared to be working through the modules.

One participant stated, "My brain can only hold so much information; the modules keep information on-hand." Other participants commented that the modules were "more interesting and interactive" than the text material, and a "very effective tool" and "a great resource to the Master Watershed Steward community."

The Arizona Master Watershed Steward program, sponsored by University of Arizona, prepares adults to serve as volunteers in the conservation of water resources and the protection, restoration, and monitoring of their watersheds. The modules were intended to reinforce concepts covered in classes and further engage participants in the learning process.

One key finding was that the modules were not clearly preferred by users over in-person instruction. One participant stated, "For me, they are just another avenue for learning, a supplement or additional reference. I prefer in person and real hands-on learning." Other participants similarly expressed their desire for hands-on and face-to-face interaction. Several participants noted that the usefulness of in-person lectures—was a function of the presenter.

Overall, the exploratory evaluation indicated that the modules were a welcome supplement to the course and were effective in reinforcing key concepts. Participants retained knowledge for several weeks, although since subjects were self-selected, they may have been self-motivated to pay attention and master the online module materials.

"I am constantly searching for new ways to educate our program’s diverse audiences and reinforce watershed science concepts, " says Candice Rupprecht, state coordinator for the Master Watershed Steward program. "I am excited to know that online learning modules can enhance our program by offering additional independent learning opportunities for our volunteers.

From the second paragraph, we can infer that()

A. learners might make no progress without the online modules

B. learners are conscientious in memorizing the content knowledge

C. learners gained improvement in their study by using the online modules

D. 70 percent of program participants took the follow-up test

题型:单项选择题

学校实现教育目的的基本途径是______.

A.团队活动
B.班级活动
C.政治工作
D.教学

题型:单项选择题

后吹会给转炉冶炼造成什么危害?

题型:单项选择题

某公司的商标注册申请公告后3个月,第三人对此提出异议,商标局裁定异议成立该公司对此规定不服,向商标评审委员会申请复审。该异议人对复审裁定不服()。

A.可以向人民法院起诉

B.可以向仲裁机构申请仲裁

C.可以请求国家工商行政管理局再复审

D.因复审裁定是终局的,应当服从

题型:单项选择题

“王中郎以围棋为坐稳,支公以围棋为手谈。”这两句话出自刘义庆的()。

A.《新语》

B.《法言》

C.《淮南子》

D.《世说新语》

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