{{B}}How to
Determine a Topic for Research{{/B}} Because you are going to put a lot of your time and energy into your research project(项目) ,the topic is especially important. In many instances your instructor may give a specific(特殊的)topic. I[ this is done, you have little choice, but most instructors will permit or even welcome a slightly changed focus(中心)in a topic if it is supported by good thinking. In some of your classes, the instructor may present a suggested list of several topics from which you are to make a choice. If this is done, do not simply select the first idea that attracts your attention. It may be one with which you will soon become bored, or it may be one on which you would have difficulty finding all the necessary information. Looking at the t [判断题] 氢气瓶是贮存和运输氢气的高压容器,气瓶的承装压力为15MPa,其构造与乙炔瓶相同。
A.正确 B.错误 [判断题] ( )遵纪守法是对从业人员的基本要求,是职业活动的基本保证。
A.正确 B.错误 [单选题]以下哪个不属于华为桌面云系统的高危操作?
A.禁用虚拟网卡 B.启用虚拟机防火墙 C.修改基础架构虑拟机的IP D.修改基础架构组件的时间 [多选题]下列哪些选项为ADSS光缆金具()。
A.耐张线夹 B.悬垂线夹 C.引下夹具 D.防震器 [判断题]继电保护装置是保证电力元件安全运行的基本装备,任何电力元件不得在无保护的状态下运行。
A.正确 B.错误 [多项选择]中央银行资产负债表中资产方主要项目包括( )。
A. 政府债券 B. 流通中货币 C. 再贴现及放款 D. 外汇、黄金储备 [单项选择]
Soccer is played by millions of people all over the world, but there have only been a few players who were truly great. How did these players get that way--was it through training and practice, or are great players" born, not made" First, these players came from places that have had famous stars in the past--players that a young boy can look up to and try to imitate. In the history of soccer, only six countries have ever won the World Cup--three from South America and three from western Europe. There has never been a great national team--or a really great player--from North America or from Asia. Second, these players have all had years of practice in the game. Alfredo Di Stefano was the son of a soccer player, as was Pele. Most players begin playing the game at the age of three or four. [单选题]当机件内、外形状都较复杂且对称时,常采用__________,这样既可以表达内部结构,又可以表达外部形状。( )
A.全剖视图 B.半剖视图 C.局部剖视图 [判断题] 线路或道岔的方向,直线要直,曲线要平顺,检查直线方向用10m弦线配以5m钢卷尺,或1m木折尺和20至30mm见方的木垫块( )
A.正确 B.错误 [单选题]慢性肾衰竭最早出现的症状是
A.皮肤瘙痒 B.胸痛 C.呼吸深长 D.食欲缺乏,恶心,呕吐 E.骨酸痛 [多项选择]煤粒度偏粗应如何调节粉碎机()。
A. 减小反击板间距离 B. 降低转速 C. 提高电机转速 D. 增大反击板距离 [单选题]扑救易燃液体和其它有可能发生流淌燃烧的火灾,消防车的作战位置应设在火灾现场的( )。1
A.上风 B.下风 C.相对高处 D.相对低处 [单选题]超过()高度的车辆或机械通过架空电力线路时,必须采取安全措施,并经县级以上的电力管理部门批准。
A.2米 B.3米 C.4米 D.5米 [简答题]简述发声异常的分类。
[单项选择]喷射混凝土时为减少粉尘和回弹率可采取______等措施。
A. 增大粗大骨料的粒径 B. 湿喷工艺,添加外加剂 C. 加大水量 D. 加大风压。 [单项选择]利用海明码(Hamming Code)纠正单比特差错的差错控制技术中,如果加入4位冗余位,则信息位最多为 位。
A. 4 B. 8 C. 11 D. 15 [多项选择]进行生物利用度实验时,下列哪几项是进行合理的体内实验分组和交叉实验给药安排
A. 不论进行动物或志愿者人体实验,均应经过严格健康检查随机分组 B. 比较研究时要交叉实验 C. 各样品实验后,要根据生物半衰期的长短安排洗净期 D. 规定标准餐 E. 实验前禁服的药品 [简答题]渴望的主题曲《好人一生平安》的原唱是我国哪位歌手?
[单选题]咬入角就是轧制时轧件与轧辊表面所接触的弧线对应的( )。
A.圆周角 B.圆心角 C.圆弧角 D.切面 [判断题]牵引辅助变流器的散热风扇只有一种速度模式
A.正确 B.错误 [多选题]作业票签发后,作业负责人应向全体作业人员交代()。
A.作业分工 B.作业任务 C.安全措施 D.注意事项 [单项选择]城区地铁基坑施工钻孔灌注桩围护结构时,为满足防噪声污染要求,广泛应用()
A. 螺旋钻机 B. 冲击式钻机 C. 正反循环钻机 [多项选择]下列关于卷材铺贴方向的规定,正确的是( )。
A. 屋面坡度小于3%时,卷材宜平行屋脊铺贴 B. 屋面坡度小于5%时,卷材垂直行屋脊铺贴 C. 屋面坡度在3%~15%时,卷材可宜平行或垂直屋脊铺贴 D. 屋面坡度大于15%时或屋面受震动时,沥青防水卷材可宜平行或垂直屋脊铺贴 E. 上下层卷材不得相互垂直铺贴 [多选题]被狗咬伤后的处理,妥当的是()
A.用肥皂水反复冲洗 B.用0.1%新洁尔灭反复冲洗半小时 C.冲洗后涂拭浓碘酒 D.伤口过深应及时缝合 E.严重咬伤者注射人抗狂犬病球蛋白 [单选题]()类变电站大型检修现场指挥部总指挥由省检修公司分管生产领导担任。
A. A.一 B.B.二 C.C.三 D.D.四 [单选题]在计算预算定额人工工日消耗量时,包含在人工幅度差内的用工是( )。
A.超运距用工 B.材料加工用工 C.机械土方工程的配合用工 D.工种交叉作业相互影响的停歇用工 [判断题]SOHC的中文意思是双顶置凸轮轴。
[判断题]调查人员可以查询与案件调查工作无关的信息。
A.正确 B.错误 我来回答: 提交
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