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【单选题】
下面的系统中,哪一个是实时系统 ?( )A.
a 办公室自动化系统
B.
b 航空订票系统
C.
c ．计算机辅助设计系统
D.
d ．计算机激光排版系统
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皮皮学刷刷变学霸
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【单选题】某县城一卷烟厂（增值税一般纳税人）2019年4月份销售自产乙类卷烟100标准箱（已知乙类卷烟适用的消费税税率为36%加0.003元/支，已知卷烟每标准箱250条，每标准条200支），取得不含税销售额120万元。则该卷烟厂当月应缴纳的城建税为（ ）万元。
A.
．3.08
B.
．3.015
C.
．3.30
D.
．3.73
【简答题】可用于暑湿泄泻，利小便以实大便的药物是（ ）
【单选题】The author uses the word 'dilemma' to indicate that ______.
A.
the fungus is both helpful and harmful in its effects
B.
no one understands how a fungus lives
C.
fungi are not really plants
D.
the fungus seems to have its own biological laws
【单选题】Like all the huge metropolises of the world, there are lots of diversions both outdoors and indoors in Chicago. The Art Institute of Chicago has one of the world's【1】art collections, including more Fr...
A.
smallest
B.
smaller
C.
greatest
D.
greater
【单选题】In an effort_____the needs of students who have both the potential and the desire to complete curriculum more demanding than that offered in the regular classroom, the Board of Education will provide ...
A.
to meet
B.
meeting
C.
has met
D.
meets
【单选题】通信双方端到端延时小于（）称为同步通信；否则被看成是异步通信。
A.
小于500ms （语言通信小于 40ms ）
B.
小于40ms （语言通信小于500 ms ）
C.
大于40ms （语言通信大于 500 ms ）
D.
大于500ms （语言通信大于40 ms ）
【单选题】Where is the gravitational pull of both the earth and the moon on an object equal?
A.
In the middle between the earth and the moon.
B.
A point closer to the earth between the moon and the earth.
C.
A point closer to the moon between the earth and the moon.
D.
No such point exists.
【单选题】Which of the following is NOT true according to the passage?
A.
Both the defeated Indians and their enemies believed the bridge was provided by the Great Spirit.
B.
The stone bridge is no longer in existence.
C.
The defeated Indians had been pursued by the enemy for several days.
D.
The Indians in the camp were in a serious situation because they took a wrong course.
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