所谓75%的差别阈限,就是把()重于标准刺激的比较刺激作为相等地带的上限;把()重于标准刺激的比较刺激作为相等地带的下限计算的差别阈限值。
参考答案:75%次感觉;25%次感觉
An analyst gathers the following information about a company’s common stock: · 1 January 2009180000 shares outstanding · 1 June 2009 60000 shares issued · 1 August 2009 2-for-1 stock split · 31 December 2009 480000 shares outstanding To calculate earnings per share for 2009, the company’s weighted average number of shares outstanding is closest:()
A. 215000.
B. 420000.
C. 430000.
肾上腺疾病,下列叙述错误的是()。
A.肾上腺皮质癌,肿块常大于5cm,肿块内密度多不均匀,易发生囊变、坏死和出血
B.肾上腺腺瘤肿块多较小,多为1~3cm,增强呈轻度强化
C.肾上腺转移癌,可为单侧或双侧,MRI表现其信号和肝脏基本相似
D.嗜铬细胞瘤,可单侧或异位,CT扫描其密度不均匀,增强有明显强化
E.Cushing综合征可由肾上腺增生、肾上腺腺瘤和肾上腺皮质癌引起