心指数是指下列哪项计算的心排出量() A.单位体重 B.单位年龄 C.单位身高 D.

题型:单项选择题

问题:

心指数是指下列哪项计算的心排出量()

A.单位体重

B.单位年龄

C.单位身高

D.单位体表面积

E.单位能量代谢率

考点:北京住院医师公共卫生学Ⅰ阶段生理学生理学题库
题型:单项选择题

在研究某铜锌合金样品的活动中,兴趣小组同学进行了如下实验,过程如图所示:

试计算:

(1)产生氢气的质量;

(2)样品中铜的质量分数;

(3)将反应后烧杯内剩余的物质过滤,求所得滤液中溶质的质量分数.

题型:单项选择题

维持和调节酸碱平衡的因素主要有()

A.离子交换调节

B.缓冲系统调节

C.肾调节

D.肺调节

E.中枢调节

题型:单项选择题

工程勘察资质和工程设计资质考核时,()供资质考核备用。

A.管理水平

B.技术水平

C.技术力量

D.业务成果

题型:单项选择题

手三阳经()

A.从头走足

B.从足走腹

C.从手走头

D.从胸走手

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.

Which of the following is true of the online learning()

A. It can show the diligence of one particular learner in content knowledge learning

B. Many visitors of the site are impressed by its friendly interface

C. It can help program participants to carry out researches

D. It can enrich program participants’ experience in water conservation

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