为 askQuestion方法给定一个字符串（String）时，它返回从20 个答案中随机选择的一个。
The askQuestion method, when given a String, returns 1 of the 20 answers selected at random.
每项研究都是随机的，参与者和医生对患者的治疗方法不做选择，随机分配。
Each of the studies was a "randomized" trial, meaning participants and doctors didn't get to choose which treatment the patients got; instead, the assignments were made by chance.
随机选择会给出两个和三个字母的单词，而GA方法在一个20x20 的网格中经过几百次衍生后会得到六个字母的单词。
The random selection gave two- and three-letter words, while the GA approach went up to six-letter words in a 20x20 grid over a few hundred generations.
方法在不同的城市，随机选择五种不同的人群，采用统一的调查问卷，对目标人群进行问卷调查。
Methods Five different groups of people were randomly selected in different cities in using a unified questionnaire which was carried out in the target population.
方法选择120例老年性骨质疏松症患者，随机分为观察组和对照组。
Methods 120 cases of senile osteoporosis were randomly divided into trial group and control group.
但是，在食物充足的时候，平等主义的方法则更加成功，如选择最饥饿的或者随机喂养等。
In times of plenty, however, the more egalitarian approach of choosing the hungriest or feeding at random is most successful.
方法选择非全身麻醉下手术的意识清醒患者180例，随机分为实验组和对照组。
Methods 180 cases of lucid patients with local anesthesia were selected and randomly divided into the experimental group and the control group.
方法：采用专门设计调查表，对随机选择自愿参加个人无偿献血人员共962人进行调查。
Methods: Using specially designed questionnaire, randomly selected pairs of voluntary unpaid blood donors to participate in a total of 962 individuals were investigated.
方法：随机选择248例次新生儿，分别在头皮动脉、桡动脉、肱动脉、股动脉4个部位穿刺抽取血气标本。
Method: 248 neonates were selected at random, and the epicranial artery, radial artery, humeral artery and femoral artery were punctured respectively.
方法随机选择25例男性患者作平板运动试验，其中14例为阳性，11例为阴性。
Methods 25 male patients were randomly selected to do plate movement test. 14 patients were positive and 11 patients were negative.
方法：随机选择正常肝脏、代偿期和失代偿期肝硬化各100例。
Methods: Normal cases compensated cirrhosis and decompensated cirrhosis each 100 cases respectively were selected at random.
方法随机选择100例140只眼青光眼滤过性手术后患者每日裂隙灯检查。
Methods 100 cases (140 eyes) were chosen by random sampling and were observed everyday with slit lamp microscope.
GENOCOPII 系统采用两步选择方法和退火惩罚函数，从单一的随机初始点进行搜索。
The GENOCOPII uses two-step selection method and annealing penalty function, searches the optimum result from one single point.
方法在某小区，随机选择10栋楼，开展入户调查。
Methods In a certain community, some families in 10 buildings were chosen randomly and investigated.
方法随机选择16例前牙和前磨牙区因瓷裂或瓷崩而导致失败的病例，记录修复体损坏的部位，分析产生失败的原因。
Methods 16 cases with fracture or exfoliation on the area of anterior teeth and premolar were selected, the damage's parts of prosthesis were recorded, and the causes of failure were analyzed.
方法选择食物嵌塞患牙随机分成两组，3MP60组和传统银汞合金组，对疗效结果进行比较。
Methods The patients were divided into two group randomly 3MP60 group and silver amalgam group. The curative effect was compared between two groups.
利用网微分方法将随机选择的概念，推广到有限马氏链随机转移概率随机调和平均的情形。
The notion of random selection is extended to random harmonious average of random transition probability for nonehomgenous Markov chains by using a new method of differentiation on net.
方法对随机选择的64例角膜穿孔伤的住院病例进行了研究。
Method 64 case of corneal perforation, randomly selected, were studied.
利用分析方法讨论随机选择函数列的收敛性问题，得到了一些有关的强大数定律。
By using the analytic approach, the problems of the convergence about the random selection function sequence are discussed and some strong laws of large Numbers are obtained.
方法选择60例患者，随机分为对照组、治疗组，治疗组用旋覆降逆汤及奥美拉唑肠溶片二联疗法，对照组只用奥美拉唑肠溶片。
Methods: 60 cases were selected and divided randomly into control group and treatment group, the latter by bigeminy therapy with the decoction and Omeprazole ECT, the former by Omeprazole ECT only.
方法随机选择168例患者，用生化分析仪检测静脉血浆的血糖值，用血糖仪法检测静脉血及末梢血中的血糖值。
Methods glucose values of venous plasma were detected with biochemical analyzer on 168 cases of patients, and glucose values of peripheral and venous blood were tested with Glucometer.
方法：选择轻、中度高血压348例，随机分为治疗组和对照组。
Method: 348 patients with mild or moderate hypertension were divided into treatment group and control group randomly.
方法监测点的选择采用单纯随机抽样方法。
Methods Simple random sampling was used to choose surveillance counties.
方法随机选择确诊冠心病患者有氧运动锻炼半年作为观察组。
Method Twenty six patients with coronary heart disease were divided two groups at radom.
方法随机选择血常规标本20例，用流式细胞术测定外周血循环内皮细胞，并与手工法比较。
Methods Flow cytometry and manual counting were applied to measure circulating endothelial cells in 20 blood routine samples.
方法：随机选择50例慢性肝炎患者，抽静脉血检测其血清甘胆酸，并行肝组织活检、病理检查。
Methods: Serum ca and liver tissue inflammation activity were examined with pathological method in 50 patients with chronic hepatitis.
方法：随机选择50例慢性肝炎患者，抽静脉血检测其血清甘胆酸，并行肝组织活检、病理检查。
Methods: Serum ca and liver tissue inflammation activity were examined with pathological method in 50 patients with chronic hepatitis.
应用推荐