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【单选题】
事务的ACID性质中，关于原子性(atomicity)的描述正确的是(52)。A.
指数据库的内容不出现矛盾的状态
B.
若事务正常结束，即使发生故障，更新结果也不会从数据库中消失
C.
事务中的所有操作要么都执行，要么都不执行
D.
若多个事务同时进行，与顺序实现的处理结果是一致的
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【多选题】What efforts have Americans made to safeguard equality in American people's lives?
A.
Americans usually follow the rule of "one person, one vote".
B.
Americans always pay attention to any other person's opinion.
C.
Americans make good rules that allow everyone chances to win.
D.
Americans are accustomed to bowing to the higher-status person.
【单选题】In the 1950's and 1960's Americans were convinced that______.
A.
they would succeed sooner or later
B.
they would have everything the Jones had
C.
they would become successful if they worked hard
D.
their children would go to college
【简答题】what is the author’s advice to Americans? A) They treat the dollar with a little respect B) They try to win in the weak-dollar gamble C) They vacation at home rather than abroad D) They treasure their...
【简答题】________是银行对已承诺贷给顾客而顾客又没有使用的那部分资金收取的费用。
【多选题】特种加工亦称“非传统加工”或“现代加工方法”,泛指用( )等 及特殊机械能等能量达到去除或增加材料的加工方法,从而实现材料被去除、变形 、改变性能或被镀覆等。
A.
电能
B.
热能
C.
机械能
D.
光能
E.
化学能
【单选题】Americans participated in a great debate throughout the 1960s and 1970s. The debate continues into the 1980s and 1990s. It is the argument over whether the use of the 150 million handguns, shotguns, a...
A.
whether the use of guns should be restricted
B.
how to ban guns altogether
C.
how to reduce the crime rate
D.
whether they should be allowed to own guns
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