更多“打火机型微型防暴枪在图像中，其颜色较普通火机略深，尾部还可能”相关的问题
今有两个标准直齿圆柱齿轮,齿轮1的模数m1=5mm、Z1=25,齿轮2的m2=3mm、Z2=40,此时它们的齿形系数 。
A . YFa1B . YFa1>YFa2C . YFa1=YFa2D . YFa1≤YFa2
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患者，女，63岁，发热、咳嗽、咳痰10天，神志不清1天，急诊入院。有高血压、糖尿病病史。体检：T39℃，R25次/
B、pH值C、血糖D、血清钾、钠、氯、钙E、血乳酸昏迷最可能的原因是A、缺氧B、中毒性脑病C、脑水肿D、乳酸酸中毒E、低血糖首先应进行的检查是A、血常规B、血生化八项C、血气分析D、胸片E、尿糖及酮体
C、血糖D、血清钾、钠、氯、钙E、血乳酸昏迷最可能的原因是A、缺氧B、中毒性脑病C、脑水肿D、乳酸酸中毒E、低血糖首先应进行的检查是A、血常规B、血生化八项C、血气分析D、胸片E、尿糖及酮体
D、血清钾、钠、氯、钙E、血乳酸昏迷最可能的原因是A、缺氧B、中毒性脑病C、脑水肿D、乳酸酸中毒E、低血糖首先应进行的检查是A、血常规B、血生化八项C、血气分析D、胸片E、尿糖及酮体
E、血乳酸昏迷最可能的原因是A、缺氧B、中毒性脑病C、脑水肿D、乳酸酸中毒E、低血糖首先应进行的检查是A、血常规B、血生化八项C、血气分析D、胸片E、尿糖及酮体
昏迷最可能的原因是A、缺氧B、中毒性脑病C、脑水肿D、乳酸酸中毒E、低血糖首先应进行的检查是A、血常规B、血生化八项C、血气分析D、胸片E、尿糖及酮体
B、中毒性脑病C、脑水肿D、乳酸酸中毒E、低血糖首先应进行的检查是A、血常规B、血生化八项C、血气分析D、胸片E、尿糖及酮体
C、脑水肿D、乳酸酸中毒E、低血糖首先应进行的检查是A、血常规B、血生化八项C、血气分析D、胸片E、尿糖及酮体
D、乳酸酸中毒E、低血糖首先应进行的检查是A、血常规B、血生化八项C、血气分析D、胸片E、尿糖及酮体
E、低血糖首先应进行的检查是A、血常规B、血生化八项C、血气分析D、胸片E、尿糖及酮体
首先应进行的检查是A、血常规B、血生化八项C、血气分析D、胸片E、尿糖及酮体
B、血生化八项C、血气分析D、胸片E、尿糖及酮体
C、血气分析D、胸片E、尿糖及酮体
D、胸片E、尿糖及酮体
E、尿糖及酮体
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离心泵单吸叶轮产生轴向力的原因有（）。
A、液体流入叶轮入口及从叶轮出口流出时的速度大小及方向均不相同；
B、对于立式水泵来说，水泵转子的重力也是轴向力的一部分；
C、液体作用在叶轮两侧的压力不相等；
D、液体作用在叶轮两侧的压力相等。
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坐骨神经痛最易受影响的反射（）。
\tA.膝反射
\tB.踝反射
\tC.病理反射
\tD.提睾反射
\tE.腹壁反射
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下列各项中，不属于廉洁自律基本要求的是（）
A.树立正确的人生观和价值观
B.公私分明、不贪不占
C.严肃认真、一丝不苟
D.遵纪守法、尽职尽责
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容许速度不超过160Km／h的线路，曲线半径为700m的到发线曲线，缓和曲线的正矢与计算正矢差不得超过（）。
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当排水沟在结构物下游汇合时，可采用（）
A、半径为10~12倍水沟顶宽的圆孤或用45°角联接
B、半径为8~10倍水沟顶宽的圆孤或用90°角联接
C、半径为10~12倍水沟顶宽的圆孤或用45°角联接
D、半径为8~10倍水沟顶宽的圆孤或用90°角联接
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建筑机械维修保养中，日常检查是指操作工人每天对设备进行的检查。
A . 正确
B . 错误
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Obviously, the per capita income of a country depends on many things, and any statistical test that does not take account of all important determinants is misspecified, and thus must be used only for descriptive and heuristic purposes. It is nonetheless interesting--and for many people surprising--to find that there is a positive and even a statistically significant relationship between these two variables: the greater the number of people per square kilometer the higher the per capita income. The law of diminishing returns is not invariably true. It would be absurd to suppose that a larger endowment of land ipso facto makes a country poorer. This consideration by itself would, of course, call for a negative sign on population density. Thus, it is interesting to ask what might account for the "wrong" sign and think of what statistical tests should ultimately be done. Clearly there is a simultaneous two-way relationship between population density and per capita income; the level of per capita income affects population growth just as population, by increasing the labor force, affects per capita income. The argument offered here suggests that perhaps countries with better economic policies and institutions come to have higher per capita incomes than countries with inferior policies and institutions, and that these higher incomes bring about a higher population growth through more immigration and lower death raters. In this way, the effects of better institutions and policies in raising per capita income swamps the tendency of diminishing returns to labor to reduce it. This hypothesis may also explain why many empirical studies have not been able to show a negative association between the rate of population growth and increases in per capita income. One reason why the ratio of natural resources to population does not account for variations in per capita income is that most economic activity can now readily be separated from deposits of raw material and arable land. Over time, transportation technologies have certainly improved, and products that have a high value in relation to their weight, such as most services and manufactured goods like computers and airplanes, may have become more important. The Silicon Valley is not important for the manufacturing of computers because of the deposits of silicon, and London and Zurich are not great banking centers because of fertile land. Even casual observation suggests that most modem manufacturing and service exports are not closely related to natural resources. Western Europe does not now have a high ratio of natural resources to population, but it is very important in the export of manufactures and services. In a parallel way, the striking success of Japan, Hong Kong, and Singapore, with relatively few natural resources per capita, cannot be explained by reliance thereon.
A．"supra."B．"at this very moment."C．"in this article."D．"in this country."
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怀疑身边的人感染了新型冠状病毒，应该怎么办呢？（）
A.不予理会，不关己事
B.不管有没有证据，先直接向有关部门举报
C.自己要戴好口罩，与其保持好一定距离
D.建议对方戴好口罩，到就近的定点救治医院发热门诊接受治疗
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甲状腺功能亢进的主要护理问题（）
A.营养失调：低于机体需要量
B.焦虑
C.活动无耐力
D.应对无效
E.潜在并发症：甲状腺危象
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常见手足蠕动症状的证候是（）
A . 肝阳上亢证
B . 血虚生风证
C . 阴虚动风证
D . 热极生风证
E . 肝阳化风证
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下列材料低温脆性为（）。
A、PVC
B、PE
C、PP
D、PS
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在破伤风手术后，空气消毒采用（）
A.乳酸消毒法
B.紫外线消毒法
C.40%甲醛消毒法
D.10%甲醛消毒法
E.0.1%次氯酸钠消毒法
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活塞的作用，是承受气缸中燃料燃烧所产生的气体压力，将动力经连杆传给曲轴，并受连杆的带动，完成进气、压缩、排气三个辅助行程的工作。
A . 正确
B . 错误
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