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【单选题】
在电子商务中,我们不光要在通讯传输中采用更强的加密算法,以保证网络上信息能够安全传输,而且必须建立一种信任及信任验证机制,即通信双方必须有一个可以被验证的标识,这就需要使用( )。
A.
数据加密
B.
数字签名
C.
数字证书
D.
证书服务
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【单选题】Based on widespread reaction to the threat of the H1N1 virus, the likely effect on the demand curve for hand sanitizers would be
A.
a shift of the demand curve to the right.
B.
a movement downward along the demand curve to the right.
C.
a shift of the demand curve to the left.
D.
a movement upward along the demand curve to the left.
【单选题】A 55-year-old woman complained to her physician of urticaria. Three days earlier, the woman had started therapy with amoxicillin for infectious tonsillitis. The physician suspected an allergic reactio...
A.
Dose of the drug
B.
Chemical structure of the drug
C.
Oral bioavailability of the drug
D.
Genetic pedigree of the patient
E.
Liver and kidney functions of the patient
【单选题】腰麻术后应采取的正确卧位是
A.
平卧位
B.
侧卧位
C.
俯卧位
D.
半卧位
E.
中凹卧位
【单选题】Suppose businesses in general believe that the economy is likely to head into recession and so they reduce capital purchases. Their reaction would initially shift ( )
A.
aggregate demand right.
B.
aggregate demand left.
C.
aggregate supply right.
D.
Aggregate demand unchanged
【单选题】What is the most likely reaction to men returning from an extended parental leave?
A.
Jealousy.
B.
Surprise.
C.
Admiration.
D.
Sympathy.
【单选题】腰麻术后回病房的病人,应采取的卧位是
A.
屈膝仰卧位
B.
中凹卧位
C.
半坐卧位
D.
平卧位
E.
去枕仰卧位
【单选题】Under which one of the following market structures are sellers most likely to consider the reaction of rival sellers when they set the price of their product?
A.
oligopoly
B.
perfect competition
C.
pure monopoly
D.
monopolistic competition
【单选题】增值税的类型中,哪种类型税基最小,消除重复征税最彻底
A.
收入型增值税
B.
生产型增值税
C.
积累型增值税
D.
消费型增值税
【简答题】某退热止痛剂为咖啡因、盐酸喹啉和安替比林的混合物,为测定其中咖啡因的含量,称取试样0.5000g,移入50mL容量
【简答题】案例分析21几三年前,先科电子计算机公司通过公开招聘,录用了两名刚毕业的计算机专业的大学生张强和,公司人事经理决定让他们从事市场营销工作。从工作申请表和面谈过程反映的情况来看,张强和虽然都愿意从事计算机推销工作,但两人之间存在明显的个性差异。张强很显然是外倾性格,热情、开朗、善交际、积极主动;而则是内倾性格,爱思考、不愿与别人多说话、喜欢独处。一年之后,张强已完全适应了销售工作,得心应...
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