新建一个工程，内有两个窗体，窗体Form1上有一个命令按钮Command1，单击该按

暑温身热已退，汗出不止喘喝欲脱，脉散大，其治法为（）。

A.清热涤暑

B.益气敛津

C.滋养肺胃

D.生脉固脱

E.填补真阴

下列不是影响概念转变的因素的是( )

A．社会情境(课堂情境)

B．动机因素

C．学习者的“概念生态圈”

D．学习者的空间推理能力

There’s a human liver sitting in a lab dish in Madison, Wis. Also a heart, a brain and every bone in the human body even though the contents of the dish are a few cells too small to be seen without a microscope. But these are stem cells, the most immature human cells ever discovered, taken from embryos before they had decided upon their career path in the body. (46) If scientists could only figure out how to give them just the right kick in just the right direction, each could become a liver, a heart, a brain or a bone. (47) When a team from the University of Wisconsin announced their discovery, doctors around the world looked forward to a new era of medicine one without organ-donor shortages or the tissues-rejection problems that bedevil transplant patients today.

Doctors also saw obstacles, though. One of them was a U. S. Congress skittish about research on stem cells taken from unwanted human embryos and aborted fetuses. Indeed, 70 lawmakers asked in a firmly worded letter that the Federal Government ban all such work.

Yet the era of "grow your own" organs is already upon us, as researchers have sidestepped the stem cell controversy by making clever use of ordinary cells. Today a machinist in Massachusetts is using his own cells to grow a new thumb after he lost part of his chest wall in an accident. A teenager born without half of his chest wall is growing a new cage of bone and cartilage within his chest cavity. Scientists announced that bladders, grown from bladder cells in a lab, have been implanted in dogs and are working. Meanwhile, patches of skin, the first "tissue-engineered" organ to be approved by the U. S. Food and Drug Administration, are healing sores and skin ulcers on hundreds of patients across the U. S.

How have scientists managed to do all this without those protean stem cells Part of the answer is smart engineering. (48) Using materials such as polymers with pores no wider than a toothbrush bristle, researchers have learned to sculpt scaffolds in shapes into which cells can settle. The other part of the answer is just plain cell biology. (49) Scientists have discovered that they don’t have to teach old cells new tricks; given the right framework and the right nutrients, cells will organize themselves into real tissues as the scaffolds dissolve. "I’m a great believer in the cells. They’re not just lying there, looking stupidly at each other," says Francois Auger, an infectious disease specialist and builder of artificial blood vessels at Laval University in Quebec City. "They will do the work for you if you treat them right."

Replacement hearts—or even replacement heart parts—are at least a decade off, estimates Kiki Hellman, who monitors tissue-engineering efforts for the FDA. "Any problem that requires lots of cell types ’talking’ to one another is really hard," she notes. Bone and cartilage efforts are much closer to fruition, and could be ready for human trials within two years. (50) And what of those magical stem cells that can grow into any organ you happen to need—if the law and biologists’ knowledge permit "Using them," says Sefton, "is really the Holy Grail.

(47) When a team from the University of Wisconsin announced their discovery, doctors around the world looked forward to a new era of medicine one without organ-donor shortages or the tissues-rejection problems that bedevil transplant patients today.

某机电安装工程公司总承包一大型制药厂设备安装工程。合同约定，工程设备和主材由业主采购提供。

管道工程安装时，因业主提供的水泵迟迟不能到货而影响工期，项目部为保证施工进度

自行采购部分水泵并进行安装，安装后被监理工程师发现，下令停工。经与业主协商，同意采用项目部购买的水泵。在试压时，发现项目部购买的水泵密封部位泄漏。

地下管网施工中，因设计图纸修改，增加了施工内容和工程量，业主仍坚持合同工期不变。为此项目部提出合同变更和索赔的申请。

该工程施工环境不确定因素较多，工期紧、任务重，项目部在施工准备阶段制订了人力资源储备预案，因施工范围扩大超过预期，该预案仍不能满足工程进度需要。

为赶工期，项目部将制药厂合成工段的压缩机安装分包给具备施工资质的施工单位。项目部编制了该工程施工组织设计，并编制压缩机施工方案，向分包单位进行交底，然后由分包单位组织施工。

项目部可否自行采购水泵若自行采购应履行何种程序？

离心泵启动出现异常泄露、异常（）、（）、异味、火花、烟气等情况需立即停泵。