更多“拨云见日(广东城市,2字)()。”相关的问题
科研选题的原则()
A.创新性
B.必要性
C.科学性
D.可行性
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若乘客储值票余额不足不能出站,且乘客不愿办理充值;则应根据()发售付费出站票,并更新储值票进站信息数。
A.乘客描述
B.最高单程票价
C.最低单程票价
D.车票进站信息
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无吸收过程的给药途径A.口服B.气雾吸入C.静脉注射D.经皮给药###SXB#
A.口服B.气雾吸入C.静脉注射D.经皮给药E.直肠给药
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下面哪一组性能是超声探伤仪的主要性能?()
A.距离幅度特征、频率响应、相对灵敏度
B.放大线性、分辨力、信噪比
C.垂直线性、水平线性、噪声电平
D.分辨力、信噪比、灵敏度余量或灵敏度
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公共危机决策过程中,决策咨询机构一般包括三种类型:政府组织内部的决策信息,咨询机构,半官方的政策研究、咨询机构等。
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计算机网络信息安全中,对称密码技术也叫做单钥或常规密码技术,其包括()和流密码技术这两个重要的分支。
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试述动物各主要类群的排泄和水平衡器官及其特点。
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当发生煤气中毒时,下列做法有误的是()
A.现场拨打电话求助
B.打开门窗,关闭煤气
C.解开中毒者衣领,清除其口中异物
D.当中毒者处于昏迷时,可适量灌服浓茶
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现金折扣是指债权人为鼓励债务人在规定的期限内付款而向债务人提供的债务扣除。 ( )
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按鲍林(Pauling)的原子轨道近似能级图,下列各能级组中,能量由低到高排列次序正确的是( )。
A. 4s, 3d, 4pB. 3d, 4s, 4pC. 4d, 5s, 5pD. 6s, 4f, 5d, 6p
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()最具代表性的形式就是质量圈管理,它最初起源于美国,后被日本企业发扬光大,成为日本企业提高产
()最具代表性的形式就是质量圈管理,它最初起源于美国,后被日本企业发扬光大,成为日本企业提高产品质量,降低生产成本的重要原因之一。A.职工代表大会B.员工自治小组C.工人委员会D.员工董事、监事
A.职工代表大会B.员工自治小组C.工人委员会D.员工董事、监事
B.员工自治小组C.工人委员会D.员工董事、监事
C.工人委员会D.员工董事、监事
D.员工董事、监事
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There are some earth phenomena you can count on, but the magnetic field, someday is not of them. It fluctuates in strength, drifts from its axis, and every few 100, 000 years undergo a dramatic polarity reversal-a period when north pole becomes south pole and south pole becomes north pole. But how is the field generated, and why is it so unstable Groundbreaking research by two French geophysicists promises to shed some light on the mystery. Using 80 meters of deep sea sediment core, they have obtained measurements of magnetic-field intensity that span 11 polarity reversals and four million years. The analysis reveals that intensity appears to fluctuate with a clear, well-defined rhythm. Although the strength of the magnetic field varies irregularly during the shout term, there seems to be an inevitable long term decline preceding each polarity reversal. When the poles flip-a process that takes several hundred thousand years--the magnetic field rapidly regains its strength and the cycle is repeated. The results have caused a stir among geophysicists. The magnetic field is thought to originate from molten iron in the outer core, 3,000 kilometers beneath the earth’s surface. By studying mineral grains found in material ranging from rocks to clay articles, previous researchers have already been able to identify reversals dating back 170 million years, including the most recent switch 730, 000 years age. How and why they occur, however, has been widely debated. Several theories link polarity flips to external disasters such as meteor impacts. But Peter Olson, a geophysicist at the Johns Hopkins University in Baltimore, says this is unlikely if the French researchers are right. In fact, Olson says intensity that predictably declines from one reversal to the next contradicts 90 percent of the models currently under study. If the results prove to be valid, geophysicists will have a new theory to guide them in their quest to understand the earth’s inner physics. It certainly points the direction for future research.
A.Some regularity in the changes of the earth’s magnetic field.B.Some causes of the fluctuation of the earth’s magnetic field.C.The origin of the earth’s magnetic field.D.The frequency of polarity reversals.
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有以下程序: #include<stdio.h> #define N 8 void fun(int*x,int i) *x=*(x+i)+1; main() int a[N]=1,2,3,4,5,6,7,8,i; fun(a,2); for(i=0;i<N/2;i++) printf("%d",a[i]); printf("\n"); 程序运行后的输出结果是()。
A、 1 3 1 3
B、 3 2 3 4
C、 4 2 3 4
D、 1 2 3 4
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