| A widely heralded but still
experimental cancer-fighting compound may be used someday to prevent two other
major killers of Americans: heart disease and stroke. That was the implication
of a remarkable report published last week in the journal Circulation by a team
of researchers from Dr. Judah Folkman’s laboratory at the Children’s Hospital in
Boston. The versatile compound is endostatin, a human protein that inhibits angiogenesis, the growth of new blood vessels in the body. In tests reported in 1997 by Folkman, a prominent cancer researcher who pioneered the study of angiogenesis, the drug had reduced and even eradicated tumors in laboratory mice. How By stunting the growth of capillaries necessary for nourishing the burgeoning mouse tumors. When news of Folkman’s achievement became widely known last year, it led A. One of the minute blood vessels that connect arterioles. B. One of the main blood vessels that connect venules. C. One of the main blood vessels that connect arterioles. D. One of the minute blood vessels that connect arterioles and venules. [多选题]自动车钩由 、电气车钩、解钩气缸等部件组成。
A.机械车钩 B.钩身及缓冲装置 C.空气管路 D.AAR车钩 [单选题] BK28022XZ024 病毒的非结构蛋白不具有的功能是： （ ）
A. 转化宿主细胞 B. 抗细胞凋亡作用 C. 保护病毒核酸 D. 具有酶功能 E. 抑制宿主细胞生物合成 [单选题]调车手信号显示减速信号、指挥机车向显示人方向来的信号、指挥机车向显示人方向稍行移动的信号、指挥机车向显示人反方向去的信号、指挥机车向显示人反方向稍行移动的信号的中转信号时，昼间可用单臂，夜间可用（ ）依式中转。
A.黄色灯光 B.红色灯光 C.绿色灯光 D.白色灯光 [简答题]试述惠州博罗社保局主要职能？
[单选题]社会福利机构变更章程，名称，服务项目和住所时，应当报（ ）审批。
A.民政部门 B.民政厅 C.民政局 D.人事局 [多选题]以下情形（）适用于采用邀请采购的方式实施采购。
A.技术复杂、有特殊要求或受自然环境限制，只有少量供应商可供选择的 B.已通过公开采购方式验证有效响应的供应商不足三家的 C.涉及国家安全、国家秘密、商业秘密等，不适宜进行公开采购的 D.依法必须招标项目已取得有关行政监督部门作出的邀请采购认定手续的 E.已通过公开采购方式验证有效响应的供应商不足三家的 [单选题]1952年,我国为了打击不法资产阶级分子为了牟取暴利大肆进行严重腐蚀干部,破坏抗美援朝和国家的经济建设的破坏活动,在全国工商业中开展的反行贿、反偷税漏税、反盗骗国家财产、反偷工减料和()的“五反”运动。[单选题]*
A.反盗窃经济情报 B.反制假造假 C.反坑害群众利益 D.反坑蒙拐骗 [单项选择]牙髓坏死一般不存在（）
A. 可伴发特殊细菌感染形成牙髓坏疽 B. 牙髓坏疽时坏死组织呈灰白色 C. 坏死牙髓常呈无结构物 D. 牙髓细胞核固缩碎裂溶解 E. 胞浆和间质崩解 [单选题]中国铁路文工团电视剧部到基层单位拍、放电视片,准予凭中国铁路文工团书面证明,将<___>免费带进客车,自行看管,重量不受20kg限制。( )
A.摄像机、录像机、投影机 B.监视器、投影机、录像机 C.监视器、摄像机、放像机 D.摄像机、录像机、放像机 [单项选择]一手掌五指并拢为体表面积的（ ）
A. 1% B. 1.25% C. 2.5% D. 3% E. 5% [单选题]巨噬细胞吞噬衰老红细胞的过程，是哪种物质转运方
式 A.单纯扩散 B.易化扩散 C.主动转运 D.出胞 E.入胞 [单项选择]We could not have fulfilled the task in time if it ______ for their help.
A. was not B. is not C. had not been D. has not been [单选题]电缆的几何尺寸主要根据电缆（ ）决定的。
A.传输容量； B.敷设条件； C.散热条件； D.容许温升。 [单选题]正步行进向前摆臂时，肘部弯曲，小臂略成水平，手心( )，手腕下沿摆到高于春秋常服最下方衣扣约15厘米处，离身体约10厘米。
A.向内稍向下 B.向内 C.向下 D.向下稍向内 [判断题]党员受到警告处分一年内、受到严重警告处分两年内,不得在党内提升职务和向党外组织推荐担任高于其原任职务的党外职务。( )
A.正确 B.错误 [单项选择]When sailors are allowed ashore after a long time at sea, they sometimes get drunk and cause trouble. For this reason, the navy (16) has its police in big ports. Whenever sailors cause trouble, the police come and (17) them.
One day, the police in a big seaport received a telephone call (18) a bar in the town. The barman said that a big sailor had got drunk and (19) the furniture in the bar. The officer in charge of the police guard that evening said that he would come immediately. Now, officers who (20) and punish the sailors (21) drunk usually chose (22) policeman they could find to go with them. (23) this particular officer did not do this. (24) , he chose the smallest and (25) man he could find to go to the bar with him and (26) the sailor. Another officer who (27) there was surprised when he saw the officer of the guard chose such a small man. (28) he A. meet with B. deal with C. see D. judge [单选题]特级化学防护服在使用中说法错误的是:( )(易)
A.避免在太阳下曝晒,严禁裸露贮存,应室内存放。 B.避免与油、酸、碱等易燃、易爆物品或化学品混装。 C.穿着本服装退出事故现场,需脱下本服装前,必须经过严格冲洗洗消 D.一旦本服装在染有军用生化毒剂的事故现场使用后,可以保留再次使用 [判断题]OTDR的使用中，平均时间越长，信噪比越高，曲线越清晰。
A.正确 B.错误 [单项选择]
A. 急性胆囊炎 B. 膈下脓肿 C. 败血症 D. 胰腺脓肿 E. 肠系膜血管栓塞 [单选题]下面不属于矿井“一通三防”管理制度之一的是( )。
A.瓦斯检查制度 B.机电管理制度 C.防尘管理制度 D.防灭火管理制度 [多选题]―年8月1日起实施的车辆分公司《安全生产责任制细则》中规定，车辆分公司安全生产责任制遵循的原则有（ ）以及失职追责原则。
A.党政同责原则 B.一岗双责原则 C.逐级负责原则 D.分工负责原则 E.齐抓共管原则 [判断题]中国工会会徽，选用汉字"中"，经艺术造型呈圆形重叠形成，象征中国工会和中国工人阶级的团结统一。（ ）
A.正确 B.错误 [单项选择]我们进行所有制结构调整的基本前提和根本出发点是
A. 坚持公有制经济的主体地位 B. 坚持多种所有制经济共同发展 C. 有利于生产力的发展 D. 坚持公有制经济和非公有制经济共同发展 我来回答: 提交
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