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{{B}}Snow Ranger{{/B}} The two things — snow and mountains — which are’ needed for a ski area are the two things that cause avalanches, large mass of snow and ice crashing’ down the side of a mountain — often called "White Death." It was file threat of the avalanche and its record as a killer of man in the western mountains that created the snow ranger. He first started on avalanche control work in the winter of 1937 — 1938 at Alta, Utah, in Wasatch National Forest. This mountain valley was becoming well known to skiers. It was dangerous. In fact, more than 120 persons had lost their lives in 1936 and another 200 died in 1937 as a result of avalanches before it became a major ski area. Thus, development of Alta and other major ski resorts in the west was dependent upon cont A. the Forest Service B. the Resource Bureau C. the Tourist Board D. the Sports Bureau [单选题]隔离开关按刀闸运动方式分类可分为()、垂直旋转式和插入式。
A.360°旋转式 B.捆绑式 C.水平旋转式 [单选题]进近灯备用电源故障或降级对NPA着陆最低标准的影响：
A.RVR不小于550米 B.RVR不小于800米 C.无影响 D.不允许夜间运行 [判断题]客运乘务组由1 名列车长和2 名列车员组成，动车组重联时，按两个乘务组配备。
A.正确 B.错误 [多选题]新员工实行的三级安全卫生教育包括（ ）。
A.组织个人教育 B.组织行业教育 C.组织入厂教育 D.组织车间教育 E.组织班组教育 [单选题]有关行政机关收到转送、交办的信访事项后，应当在多少日内决定是否受理并书面告知信访人？
A.5日 B.10日 C.15日 D.30日 [不定项选择题]对二叉树摸型说法正确是（ ）。
Ⅰ.模型不但可对欧式期权进行定价，也可对美式期权、奇异期权以及结构化金融产品进行定价
Ⅱ.模型思路简沽、应用广泛
Ⅲ.步数比较大时，二叉树法更加接近现实的情形
Ⅳ.当步数为n时，nT时刻股票价格共有n种可能
A.A：Ⅰ.Ⅱ.Ⅲ B.B：Ⅱ.Ⅲ.Ⅳ C.C：Ⅰ.Ⅱ.Ⅲ.Ⅳ D.D：Ⅰ.Ⅲ.Ⅳ [填空题] Do you wake up every day feeling too tired, or even upset If so, then a new alarm clock could be just for you.
The clock, called SleepSmart, measures your sleep cycle, and waits (67) _______ you to be in your lightest phase of sleep (68) _______ rousing you. Its makers say that should (69) _______ you wake up feeling refreshed every morning..
As you sleep you pass (70) _______ a sequence of sleep states — light sleep, deep sleep and REM (rapid eye movement) sleep — that (71) _______ approximately every 90 minutes. The point in that cycle at which you wake can (72) _______ how you feel later, and may (73) _______ have a greater impact than how much or little you have slept. Being roused during a light phase (74) _______ you are more likely to wake up energetic.
SleepSmart (75) _______ the distinct pattern of brain waves (76) _______ during each phase of sleep, via a headband equipped (77) _______ electrodes (电极) and a microprocessor. This measures the electrical act
A. A．once B．since C．after D．while [多选题]易燃固体的火灾危险性有()
A.燃点低、易点燃 B.遇酸、氧化剂易燃易爆炸 C.本身或燃烧产物有毒 D.兼有遇湿易燃性硫的磷化物类,不仅具有遇火受热的易燃性,还具有遇湿易燃性 [单选题]带电接低压电缆作业前，应使用（ ）V及以上绝缘电阻表检测电缆绝缘电阻。
A.500 B.1000 C.2500 D.5000 [填空题] 发生安全信息时,必须在规定时间内按规定做好信息上报工作,填写（ ）。
[不定项选择题]A.釉质发育不全
A.四环素牙 B.牙本质发育不全症 C.氟牙症 D.牙骨质发育不全症 E.在牙的发育阶段，由于局部和全身因素造成釉质结构异常的是 [单项选择]有关对信息和数据的描述，正确的是( )。
A. 数据是经过处理的信息 B. 数据是经过整理的符号 C. 数据是企业最基本的因素 D. 所有的数据都是有用的 [单选题]搬离可燃物的灭火方法是( )。
A.窒息法 B.冷却法 C.隔离法 D.抑制法 [判断题]将三相绕组的首末端依次相连，构成一个闭合回路，再从三个连接点处引出三根线的连接方式为△形连接。（ ）[1.0分]
A.正确 B.错误 [单选题]含砾砂岩岩屑样品中含油岩屑占定名岩屑百分含量为40%，确定含油级别为0。
A.A、富含油 B.B、油浸 C.C、油斑 D.D、油迹 [判断题]快开门式压力容器的封头和筒体的连接都是采用焊接方法连接的。
A.正确 B.错误 [单项选择]Thomas gave them a (n) （）expensive wedding present
A. many B. much C. very D. enough 我来回答: 提交
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