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问题 单项选择题

男性，58岁，MRI平扫示右肾近髓质部类圆形短T1长T2信号灶，直径约2.0cm，边缘清楚锐利，增强扫描该病变无强化，最可能的诊断为（）

 

A.肾细胞癌

B.肾囊肿

C.肾结石

D.肾错构瘤

E.肾盏积水

答案

参考答案：B

多项选择题

下列关于贴现债券的表述正确的是( )。

A．贴现债券，也称贴水债券

B．贴现债券，也称附息债券

C．是指券面上不附息票，发行时按规定的折扣率(贴水率)以低于券面价值的价格发行

D．其发行价格与券面价值的差价即为利息

E．到期时按券面价值偿还本金的债券
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单项选择题

Observe that for the programmer，as for the chef,the urgency of the patron(顾客) may govern the scheduled completion of the task，but it cannot govern the actual completion．An omelette(煎鸡蛋)，promised in two minutes，may appear to be progressing nicely．But when it has not set in two minutes，the customer has two choices—waits or eats it raw．Software customers have had (71) choices．
Now I do not think software (72) have less inherent courage and firmness than chefs，nor than other engineering managers．But false (73) to match the patron’s desired date is much more common in our discipline than elsewhere in engineering．It is very (74) to make a vigorous，plausible，and job risking defense of an estimate that is derived by no quantitative method，supported by little data，and certified chiefly by the hunches of the managers．
Clearly two solutions are needed．We need to develop and publicize productivity figures，bug-incidence figures，estimating rules，and so on．The whole profession can only profit from (75) such data．Until estimating is on a sounder basis，individual managers will need to stiffen their backbones and defend their estimates with the assurance that their poor hunches are better than wish derived estimates．

A．easy

B．difficult

C．simple

D．painless
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