更多"Computer date base and electronic m"的相关试题:
[单项选择]Computer data bases and electronic mail systems have been around since the late 1970s.()
A. 计算机数据库和电子邮件自20世纪70年代末,便无处不在了。
B. 20世纪70年代后期以来,计算机数据库和电子邮件系统已被广泛使用。
C. 20世纪70年代末,计算机数据基础和电子邮递系统就已经在大家周围了。
D. 在20世纪70年代后期,计算机数据库和电子邮件已普及了。
[单项选择]The electronic computer is chiefly characterized by its accurate and rapid computation.()
A. 电子计算机的主要特性是计算准确和计算迅速。
B. 电子计算机的主要特点是计算准确而迅速。
C. 电子计算机是准确而迅速的。
D. 电子计算机被准确和迅速定为其首要个性。
[单项选择]With the introduction of the electronic computer, there is no complicated problem can be solved in a few hours.
A. but
B. which
C. that
D. what
[单项选择]The speed with which an electronic computer works depends on its()
A. electronic circuits
B. programmer
C. vacuum tubes, or transistors
D. instructions
[单项选择]The electronic computer is ______some of the tasks that were once accomplished by our own brains.
A. taking care
B. taking in
C. taking off
D. taking over
[单项选择]HAV是()
A. 脊髓灰质炎病毒
B. 甲型肝炎病毒
C. 流行性乙型脑炎病毒
D. 丙型肝炎病毒
E. 人类免疫缺陷病毒
[单项选择]What effect does excessive positive ionization have on some people
A. They think they are mad.
B. They feel very tired.
C. They become violently sick.
D. They are too tired to do anything.
[多项选择]HAV的特点包括()。
A. 易发展成慢性感染
B. 为环状DNA病毒
C. 与肝硬化和肝癌密切相关
D. 病后形成牢固免疫力
E. 目前能用细胞体外培养
[单项选择]女性,26岁。2月前患肝炎住院。近日门诊复查,血化验结果:ALT30U,HAV-IgM(-),HAV-IgG(+),抗HBs(+),抗HBc(+),此时诊断为()
A. 甲型肝炎恢复期
B. 乙型肝炎急性期与甲型肝炎感染后状态
C. 乙型肝炎恢复期与甲型肝炎感染后状态
D. 非甲非乙型肝炎
E. 甲型肝炎与乙型肝炎混合感染
[单项选择]女性,26岁。2月前患肝炎住院。近日门诊复查,血检验结果:ALT30U,HAV-IgM(-),HAV-IgG(+),抗HBs(+),抗HBc(+),此时诊断为()
A. 甲型肝炎恢复期
B. 乙型肝炎急性期与甲型肝炎感染后状态
C. 乙型肝炎恢复期与甲型肝炎感染后状态
D. 非甲非乙型肝炎
E. 甲型肝炎与乙型肝炎混合感染
[单项选择]According to the author, anthropologists would have all culture viewed ______.
A. comparatively
B. independently
C. intrinsically
D. hierarchically
[单项选择]HAV的主要传播途径是()
A. 通过胎盘传播
B. 吸血昆虫叮咬
C. 输血传播
D. 消化道传播
E. 性接触传播
[单项选择]Dozens of scientific groups all over the world have been __________ the goal of a practical and economic way to use sunlight and split water molecules.
A. pursuing
B. attaining
C. reaching
D. chasing
[单项选择]100Base-T的网卡可以支持100Base-TX、100Base-T4和100Base-FX标准,只支持RJ-45接口标准的网卡是 ______。
A. 支持100Base-TX和100Base-FX的
B. 支持100Base-TX和100Base-T4的
C. 支持100Base-T4和100Base-FX的
D. 只有100Base-TX标准的
[单项选择]As a result of their frequent litters, rabbits have the reputation of being ______.
A. ruthless
B. prolific
C. practical
D. rational