及时修订完善输变电设备状态检修试验规程及各类设备的评价导则、检修导则,不断提高状态检修技术标准的()和()。
A.适用性
B.可操作性
C.实用性
D.权威性
参考答案:A, B
Which of the following is a disadvantage of using the price-to-book value (PBV) ratio()
A. Book values are affected by accounting standards, which may vary across firms and countries.
B. Firms with negative earnings cannot be evaluated with the PBV ratios.
C. Book value may not mean much for manufacturing firms with significant fixed costs.
32岁女性,发现糖尿病5年,原发不孕,月经失调半年,最近淋漓出血一个月至今未干净,并伴有下腹痛,准备给予诊断性刮宫。
关于诊断性刮宫的操作规范及注意事项,以下哪项正确
A.手术前应测体温,不得超过37.5℃
B.刮宫前 * * 出血者,不必行盆腔检查
C.一般应先探宫腔深度,再刮宫颈管,然后刮宫腔
D.无论刮宫目的如何,均应尽量在不出血时进行
E.刮出物肉眼检查无异常者可不送病理检查