Every year, 2,000 American lives are
saved by the selflessness of others. These are the bone marrow donors who give
the gift of life to patients fighting deadly diseases such as leukemia,
lymphoma, and aplastic anemia. That’s the good news. The bad news is that
thousands more die each year because not enough people have signed on to the
registries that would help the ill find a suitable match for a
transplant. Bone marrow or stem-cell transplants are usually a last resort, intended for those whose illnesses have not responded to traditional treatments such as chemotherapy or radiation. How do they work We all store a special type of cell in our bone marrow called stem cells. These primitive cells give rise to the three types of blood cells: red, white and platelets. Everyone’s stem cells have certai A. Unhealthy cells of the patient are killed through radiation or chemotherapy. B. Healthy cells are extracted from the donor. C. Extracted cells are prepared in the laboratory. D. The donor’s cells are transplanted to the patient. [单选题]列车运行途中,司机发现列车异常晃车时,工务部门未登记行车限制条件前,列车调度员对需经过晃车地点的列车应发布限速( )km/h的调度命令,限速位置按汇报的晃车里程前后各加200m确定。
A.20 B.30 C.50 [判断题]测量高压电缆各相电流,电缆头线间距离应大于300mm,且绝缘良好、测量方便。当高压电缆有接地时,可采用钳形电流表测量电缆电流。
A.正确 B.错误 [判断题]电网企业一线编制岗位练兵的基本内容和竞赛(考核)方式,分为班组内部活动和以班组为单位参加上级竞赛比武的准备性活动两大类。
A.正确 B.错误 [单项选择]下列不属于生命体征的是
A. 体温 B. 神态 C. 呼吸 D. 血压 E. 意识 [填空题]并行数据库系统的性能有两种主要的度量,分别是______和响应时间。
[单选题]旅客列车使用紧急制动阀(紧急制动装置)停车后,车辆乘务员(随车机械师)检查车辆技术状态良好后通知司机,列车经( )后开车。
A.全部试验 B.简略试验 C.持续一定时间的保压试验 [单项选择]Questions 8 to 10 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions.
Now, listen to the conversation. What kind of topic do you think Donna does NOT like A. Movies. B. Books. C. Politics. D. Music. [填空题]市场上银饰品常用()来表示.
[多选题]公有制经济的形式有()。
A.全民所有制 B.劳动群众集体所有制 C.个体经济 D.合营经济 [单项选择]急性胃炎()
A. 药物副作用 B. 反射性呕吐 C. 神经官能症 D. 中枢性呕吐 E. 前庭障碍性呕吐 [单项选择]与霍乱弧菌定居小肠有关的结构是()
A. 普通菌毛 B. 性菌毛 C. 鞭毛 D. O抗原 E. K抗原 [多选题]《铁路技术管理规程》(普速铁路部分)规定:呼唤信号的鸣示方式为二短一长声,使用时机为( )。
A.机车要求出入段时 B.在车站要求显示信号时 C.发现线路有危及行车安全的不良处所时 D.要求防护人员撤回时 [名词解释]掺混肥
[单选题]下列关于试用期的说法不正确的是( )。
A.同一用人单位与同一劳动者只能约定一次试用期 B.劳动合同期限三个月以上不满一年的,试用期不得超过一个月 C.同一用人单位与同一劳动者可以约定多次试用期 D.三年以上固定期限和无固定期限的劳动合同,试用期不得超过六个月 [单选题]更换新道岔时,道岔( )引轨应同时更换成新轨。
A.前一对 B.后一对 C.前后各一对 D.前后各二对 [多选题]以南宁地铁2号线电客车为例,以南宁2号线电客车为例,一列车设2个空气压缩机,7.0~7.5 Bar时只会启动一台空压机工作,根据单双日规则,优先运行M1车空压机的日期是( ) ?
A.44444 B.44445 C.44446 D.44447 [单选题]SDH帧周期()us。( )
A.15 B.25 C.125 D.250 [判断题]水泥凝结时间测定之前应调整测定仪的试针接触玻璃板时指针对准零点。( )
A.正确 B.错误 [判断题]汽车故障诊断的基本方法有:传统的人工经验诊断法和现代仪器设备诊断法两种。(易)( )
A.正确 B.错误 我来回答: 提交
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