热门试题:
[多选题] 要使三极管处于放大状态,应满足的条件是
A.集电结正向偏置
B.发射极正向偏置
C.集电结反向偏置
D.发射结反向偏置
[单选题]有关OptiX设备子架说法正确的是：（ ）
A.设备子架功耗是固定的
B.设备子架的功耗与配置单板有关
C.设备E1线只能上走线
D.设备风扇开关可以长时间关闭
[单选题]地质雷达探测是利用电磁波在隧道开挖工作面前方岩体中的传播及反射，根据传播速度和反射脉冲波走时进行超前地质预报的一种物探方法。结合背景材料，回答下列有关地质雷达探测法方面的问题。（2）地质雷达连续预报时，前后两次重叠长度应在（）以上。
A.3m
B.5m
C.8m
D.10m
[填空题] Business and government leaders consider the inflation rate to be an important indicator. Inflation is a period of increased (B1) that causes rapid rises in prices. When your money buys fewer goods so that you get (B2) for the same amount of money as before, inflation is the problem. There is a general rise (B3) the price of goods and services. Your money buys less. Sometimes people (B4) inflation as a time when "a dollar is not worth a dollar any more."
Inflation is a problem for all consumers. People who live on a (B5) income are hurt the. (B6) Retired people, for instance, cannot (B7) on an increase in income as prices rise. Elderly people face serious problems in (B8) their incomes to meet their needs in (B9) of inflation. Retirement income (B10) any fixed income usually does not rise as fast as prices. Many retired people must cut their spending to (B11) up with rising prices. In many cases they must stop buying some necessary items, such as food an
A. A．on
B．by
C．at
D．against
[单选题]有关单位要制定绝缘工具的专门保管制度和( )措施，并按要求定期进行试验。
A.防尘
B.防潮
C.防火
D.防水
[简答题]《铁路旅客运输规程》（铁运〔1997〕101号）规定，旅客在车站发现携带品损失时，应当在离开车站前向<--NRC-->声明。
[单选题]因故间断电力监控系统工作()以上者，应重新学习本规程，并经考试合格后，方可恢复工作。
A.连续三个月
B.六个月
C.连续六个月
D.三个月
[单项选择]A growing taste for shark steaks and shark-fin soup has for the first time in 400 million years put the scourge of the sea at the wrong end of the food chain. Commercial landings of this toothsome fish have doubled every year since 1986, and shark populations are plunging. It is hardly a case of good riddance. Sharks do for gentler fish what lions do for the wildebeest; they check populations by feeding on the weak. Also, sharks apparently do not get cancer and may therefore harbor clues to the nature of the disease. Finally, there is the issue of motherhood. Sharks are viviparous. That is, they bear their young alive and swimming(not sealed in eggs)after gestation periods lasting from nine months to two years. Shark mothers generally give birth to litters of from eight to twelve pups and bear only one litter every other year. This is why sharks have one of the lowest fecundity rates in the ocean. The female cod, for example, spawns annually and lays a few million eggs at a time. If three quarters of the cod were to be fished this year, they could be back in full force in a few years. But if humans took that big of a bite out of the sharks, the population would not recover for 15 years. So, late this summer, if all goes according to plan, the shark will join the bald eagle and the buffalo on the list of managed species. The federal government will cap the U. S. commercial catch at 5,800 metric tons, about half of the 1989 level, and limit sportsmen to two sharks per boat. Another provision discourages finning, the harvesting of shark fins alone, by limiting the weight of fins to 7 percent of that of all the carcasses. Finning got under the skin of environmentalists, and the resulting anger helped to mobilize support for the new regulations. Finning itself is a fairly recent innovation. Shark fins contain noodlelike cartilaginous tissues that Chinese chefs have traditionally used to thicken and flavor soup. Over the past few years rising demand in Hong Kong has made the fins be worth considerably more to the fisherman thanthe average price of about $ 10 a pound. But can U. S. quotas save shark species that wander the whole Atlantic The blue shark, for example, migrates into the waters of something like 23 countries. John G. Casey, a biologist with the National Marine Fishheries Service Research Center in Narragansett, R.I. , admits that international coordination will eventually be necessary, but he supports U. S. quotas as a first step in mobilizing to other nations. Meanwhile the commercial fishermen are not waiting for the new rules to take effect. "There is a pre-quota rush on sharks," Casey says, "and it"s going on as we speak."If the species Homo logicus was determined to be viviparous and to have extremely low fecundity rates on land, we might expect that______.
A. Homo logicus could overpopulate its niche and should be controlled
B. Homo logicus might be declared and endangered species
C. Homo logicus would pose no danger to other species and would itself be in no danger
D. none of these events would be expected with certainty
[填空题]沃派星燃卡系列产品目前包括：___、沃派星燃喜乐卡及___、三种。
[多项选择]会务管理主要包括什么（）
A. 会议的筹备
B. 会中管理
C. 会议费用报销
D. 会议的善后工作
[单选题]精馏塔最适宜的回流比是最小回流比的（ ）倍。
A.1.8-3
B.2-2.5
C.1.5-2.5
D.1.1-2
[判断题]监控值班员远方遥控操作前，应先在调控防误系统模拟图上进行核对性模拟预演，无误后，再进行实际设备操作
A.正确
B.错误
[判断题]起重设备作业人员在作业中应严格执行起重设备的操作规程和有关安全规章制度。
A.正确
B.错误
[判断题]固定资产贷款自主支付的，实行专户封闭管理，贷款发放后直接转入合同约定的贷款资金专用账户。（ ）
A.正确
B.错误
[单项选择]节流阀开启过小，供液量不足，会造成（）。
A. 蒸发温度降低
B. 蒸发温度升高
C. 影响不大
D. 冷凝温度升高
[判断题]管理线损是指电能在电网传输过程中，由于计量、抄表、窃电及其它人为因素造成的电能损失。（）
A.正确
B.错误
[多选题]进行电力通信光缆接续工作时，工作场所周围应装设（ ）,必要时派人看管。因工作需要必须短时移动或拆除遮栏（围栏、围网）、标示牌时，应征得工作负责人同意，完毕后应立即恢复。
A.遮栏
B.围栏
C.围网
D.标示牌
[单项选择]若变量已正确定义，要求程序段完成求5!的计算，不能完成此操作的程序段是（ ）。
A. for(i=1,p=1;i<=5;i++）p*=i;
B. for(i=1;i<=5;i++){ p=1; p*=i;}
C. i=1;p=1;while(i<=5){p*=i; i++;}
D. i=1;p=1;do{p*=i; i++; }while(i<=5);
[单项选择]留置气泡技术，用于（）
A. 皮内注射
B. 皮下注射
C. 肌内注射
D. 静脉注射
[判断题]CCBII制动机除了紧急制动时自动制动阀输出一个空气信号加电信号两个指令外，其他情况电子制动阀输出的均为电信号。
A.正确
B.错误
[单项选择]安全质量标准化要求，滚筒采煤机上截齿数量和合金齐全完好，截齿缺少或无合金的数量不得超过总数量的（）。
A. 3%
B. 5%
C. 10%
[不定项选择题]A.20ml／kg
A.50ml／kg
B.100～120ml／kg
C.50～100ml／kg
D.70～90ml／kg
E.中度失水的累积损失量为
[单项选择]胸腰椎骨折者保守治疗期间体位为（）。
A. 平卧位
B. 膝部垫枕
C. 头颈部垫枕
D. 腰背部垫枕
E. 头部与臀部垫枕
[单选题]站台上堆放货物，距站台边缘不得小于（ ） m，不足规定距离时，不得进行调车作业。
A.1
B.1.5
C.2
[单选题]公务员辞去公职， 任免机关应当自接到申请之日起（） 内予以审
批， 其中领导成员辞去公职的申请， 应当自接到申请之日起（）
A.十五日， 三十日
B.六十日， 九十日
C.三十日， 九十日
D.三十日， 六十日
[判断题]在二次回路通电前应通知运维人员，得到运维人员许可后即可加压。
A.正确
B.错误
[单选题]《供电营业规则》规定高压供电方案的有效期为180天。
A.正确
B.错误
[单项选择]患者，女性，已婚未育，主因停经2个月余，阴道不规则出血6天，自测尿妊娠试验阳性，血HCG高于正常，B超示增大的子宫区充满长形雪花状光片，双侧卵巢有黄素化囊肿。诊断此病最有价值的是（）。
A. 停经及不规则阴道流血
B. 尿中HCG呈高值
C. 双侧卵巢有黄素化囊肿
D. 妊娠试验阳性
E. B超检查
[单选题]目前测定高压蒸汽灭菌效果最可靠的方法是
A.温度计监测
B.生物测试法
C.外科切口感染率
D.化学指示剂法
E.灭菌后物品细菌培养
[简答题]丰子恺回忆说，他在求学时，一次李叔同先生上课时发现有一个学生老看闲书，另一个学生则随地吐痰，李先生早已发觉，却未当场批评，而是下课时轻声说：“等一下再走。”在其他学生离开教室后，李先生缓缓地说：“下次你们不要看闲书，也不要随地吐痰。”说完，他微鞠一躬。此后，全班同学都为李先生的雍容和“爱人以德”的风范所折服，也改掉了上课时的一些不良习惯。你从上述材料中领悟到哪些师德规范？
[多选题]BC003套管整形修复中,整形工具有( )。
A.冲胀类整形工具
B.碾压挤胀类整形工具
C.爆燃整形工具
D.磨铣扩径工具
[判断题]涉及联络线的施工、检修作业地点包含既有线调度台和高速铁路调度台管辖地段时，应在高速铁路调度台管辖的车站办理登销记，由高速铁路调度台发布施工或检修调度命令，并抄送给相关既有线调度台。
A.正确
B.错误
[判断题]77. 半自动闭塞区段，遇超长列车头部越过出站信号机而未压上出站方面的轨道电路发车时，行车凭证为半自动闭塞发车进路通知书。（ ）
A.正确
B.错误
[单选题]电力生产的特点是()、集中性、适用性、先行性。
A.A、、同时性
B.B、、广泛性
C.C、、统一性
[单选题]超速锁是电动高处作业吊篮中的重要( )装置。
A.平衡
B.阻力
C.安全保护
