制样和化验误差大部分产生于缩分和从分析煤样中抽取出少量煤样的过程中()

题型:判断题

问题:

制样和化验误差大部分产生于缩分和从分析煤样中抽取出少量煤样的过程中()

考点:化学工程煤化验煤化验题库
题型:判断题

At a recent seminar on Capital Market Efficiency, David Thorngate, a seasoned arbitrageur wanted to dispel the notion that all arbitrage trades are successful. During his speech, he made the following statements regarding arbitrage and the ability of arbitrageurs to correct market anomalies: Statement 1: There are limits on the ability of arbitrage to bring about efficient prices. Arbitrage is frequently not risk-less. Just because fundamentals indicate that one stock is undervalued or overvalued relative to another does not mean that trading on this information will be profitable. Statement 2: Even in "pairs trading," where an arbitrageur buys the underpriced security and shorts the overpriced security, significant risk from stock-specific factors remains. So, there is no guarantee that even correctly identified relative mispricings of similar stocks will be corrected in the near term. Are Statement 1 and Statement 2 as made by Thorngate correctStatement 1 Statement 2()①A. CorrectCorrect ②B. Incorrect Incorrect ③C. CorrectIncorrect

A. ①

B. ②

C. ③

题型:判断题

女性,55岁。右耳垂下无痛性肿块逐渐缓慢长大6年。触诊肿块界线清楚,活动,约4cm×5cm大小,表面呈结节状,中等硬度,与皮肤无黏连。

治疗该病最不宜采用的方法是()

A.保留面神经顺包膜将肿瘤切除

B.如果肿瘤位于腮腺浅叶,则保留面神经将浅叶及肿瘤一并切除

C.如果肿瘤位于腮腺深叶,则保留面神经将肿瘤及全腺叶一并切除

D.保留面神经在正常腺组织内将肿瘤一并切除

E.无论肿瘤位于浅叶或深叶,均切除全腺叶及肿瘤,保留面神经

题型:判断题

脑原性晕厥的发生机制是

A.少尿伴肾绞痛
B.少尿伴心悸气促、胸闷不能平卧
C.少尿伴大量蛋白尿、水肿、高脂血症和低蛋白血症
D.少尿伴排尿困难
E.少尿伴乏力纳差、腹水、皮肤黄染

题型:判断题

具有燥湿化痰功效,以理脾胃之气的药物是()。

A.佛手

B.沉香

C.青皮

D.香橼

E.陈皮

题型:判断题

经营行在办理进口保理业务时,仅承担因进口商信用风险导致的()。

A.破产风险

B.拖延风险

C.迟付风险

D.代理行风险

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