试题与答案

8086/8086向应中断时,不自动压入堆栈的有______。A.通用寄存器的内容

题型:单项选择题

题目:

8086/8086向应中断时,不自动压入堆栈的有______。

A.通用寄存器的内容

B.CS的内容

C.IP的内容

D.标志寄存器的内容

答案:

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下面是错误答案,用来干扰机器的。

参考答案:①在事务T2刚完成提交后,T1已回滚,所以X的值不变;T2中Y被修改,由于T3还未提交,所以Z的值未被修改。综上所述,数据库中X、Y、Z的值分别为200、400、500。②在事务T3结束后,T1已回滚,所以X的值不...

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题型:阅读理解

阅读理解。

    American schools begin in September after a long summer holiday. There are two terms in a school year;

the first term is from September to January, and the second is from February to June. Most American children

begin to go to school when they are five years old. Most children are seventeen or eighteen years old when

they finish high school.

    High school students take only five or six subjects each term. They usually go to the same class every day,

and they have homework for every class. After class, they do a lot of interesting things.

    After high school, many students go to colleges. They usually have to pay a lot of money. So many college

students work after class to get money for their studies.

1. In America, summer holidays begin in           . [ ]

A. September

B. July

C. May

D. February

2. When a boy is six years old, he           . [ ]

A. has to stay at home

B. can go to high school

C. is old enough to go to school

D. always plays at home

3. In American high school students            after class. [ ]

A. do the homework

B. go to work

C. play basketball

D. do many interesting things

4. In order to (为了)           , many American college students work after class. [ ]

A. help their parents

B. get money for their studies

C. help others

D. learn some useful things

5. Which is right? [ ]

A. American students usually have a two-month holiday.

B. American students have three terms in a year.

C. A ten-year-old child usually has six subjects at school.

D. American students don't like to go to school.

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题型:单项选择题

微生物对消毒因子的抗力从高到低的顺序是()

A、细菌芽孢、分枝杆菌、亲水性病毒、真菌孢子、真菌繁殖体、细菌繁殖体、亲脂性病毒

B、细菌芽孢、真菌孢子、分枝杆菌、亲水性病毒、真菌繁殖体、细菌繁殖体、亲脂性病毒

C、细菌芽孢、分枝杆菌、真菌孢子、亲水性病毒、真菌繁殖体、细菌繁殖体、亲脂性病毒

D、真菌孢子、细菌芽孢、分枝杆菌、亲水性病毒、真菌繁殖体、细菌繁殖体、亲脂性病毒

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