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【单选题】
嘧啶核苷酸从头合成的原料不包括（ ）
A.
天冬氨酸
B.
甘氨酸
C.
谷氨酰胺
D.
二氧化碳
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参考答案：
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【单选题】听力原文：Man: In the late 1850s Chinese laborers flooded into American and it was not until early 1860's that many more Chinese arrived in California. Was there any improvement for Chinese's living condit...
A.
Early 1830s.
B.
Late 1840s.
C.
Late 1850s.
D.
Early 1860s.
查看完整题目与答案
【单选题】1个字节表示( )位二进制数
A.
2
B.
4
C.
8
D.
18
查看完整题目与答案
【多选题】一物体做匀变速直线运动,某时刻速度大小为v1=4m/s,1s后的速度大小变为v2=10m/s,在这1s内物体的加速度大小
A.
可能小于4
B.
可能等于6
C.
一定等于6
D.
可能大于l0
查看完整题目与答案
【简答题】BCD码是指用等值的( )位二进制数来表示1位十进制数,即二进制编码的十进制数。 BCD码分两类: 组合的BCD码,指用1个字节的二进制数表示2位的十进制数 非组合的BCD码,指用1个字节的低四位表示1位的十进制数,高四位为( )
查看完整题目与答案
【单选题】1个字节表示( )位二进制位。
A.
2
B.
4
C.
8
D.
18
查看完整题目与答案
【单选题】一物体做匀变速直线运动,某时刻速度大小为 4m/s,2s后速度大小变为10m/s,则在这2s内该物体的加速度大小可能为 ( )
A.
2 m/s 2
B.
5 m/s 2
C.
6 m/s 2
D.
7 m/s 2
查看完整题目与答案
【单选题】Flats were almost unknown in Britain until the 1850s when they were developed, along with other industrial dwellings, for the laboring classes. These vast blocks were plainly a convenient means of eas...
A.
they were principally built for those families with several servants
B.
people were not conscious of the crowded housing of the less well-to-do
C.
there was increasing concern over accommodation for the poor
D.
people became conscious of the social needs of the rural population
查看完整题目与答案
【简答题】The theory of evolution by natural selection was put forward in the 1850s independently by two men. One was Charles Darwin; the other was Alfred Russel Wallace. Both men had some scientific background...
查看完整题目与答案
【单选题】In the early 1850s, with the westward movement, the slavery became a serious political issue endangering the unity of the country because ________.
A.
whether or not slavery would expand into the future states formed as a result of the westward movement would affect the balance of power in the Senate
B.
the South insisted that slavery should be allowed to spread into all new territories
C.
the North refused to let slavery spread into new territories
D.
the North wanted to put an end to slavery
查看完整题目与答案
【单选题】It can be inferred from the passage that before 1850s, all of the following were characteristic of higher education EXCEPT______.
A.
the elective system
B.
drilling
C.
strict discipline
D.
rote learning
查看完整题目与答案
相关题目：
【单选题】听力原文：Man: In the late 1850s Chinese laborers flooded into American and it was not until early 1860's that many more Chinese arrived in California. Was there any improvement for Chinese's living condit...
A.
Early 1830s.
B.
Late 1840s.
C.
Late 1850s.
D.
Early 1860s.
查看完整题目与答案
【单选题】1个字节表示( )位二进制数
A.
2
B.
4
C.
8
D.
18
查看完整题目与答案
【多选题】一物体做匀变速直线运动,某时刻速度大小为v1=4m/s,1s后的速度大小变为v2=10m/s,在这1s内物体的加速度大小
A.
可能小于4
B.
可能等于6
C.
一定等于6
D.
可能大于l0
查看完整题目与答案
【简答题】BCD码是指用等值的( )位二进制数来表示1位十进制数,即二进制编码的十进制数。 BCD码分两类: 组合的BCD码,指用1个字节的二进制数表示2位的十进制数 非组合的BCD码,指用1个字节的低四位表示1位的十进制数,高四位为( )
查看完整题目与答案
【单选题】1个字节表示( )位二进制位。
A.
2
B.
4
C.
8
D.
18
查看完整题目与答案
【单选题】一物体做匀变速直线运动,某时刻速度大小为 4m/s,2s后速度大小变为10m/s,则在这2s内该物体的加速度大小可能为 ( )
A.
2 m/s 2
B.
5 m/s 2
C.
6 m/s 2
D.
7 m/s 2
查看完整题目与答案
【单选题】Flats were almost unknown in Britain until the 1850s when they were developed, along with other industrial dwellings, for the laboring classes. These vast blocks were plainly a convenient means of eas...
A.
they were principally built for those families with several servants
B.
people were not conscious of the crowded housing of the less well-to-do
C.
there was increasing concern over accommodation for the poor
D.
people became conscious of the social needs of the rural population
查看完整题目与答案
【简答题】The theory of evolution by natural selection was put forward in the 1850s independently by two men. One was Charles Darwin; the other was Alfred Russel Wallace. Both men had some scientific background...
查看完整题目与答案
【单选题】In the early 1850s, with the westward movement, the slavery became a serious political issue endangering the unity of the country because ________.
A.
whether or not slavery would expand into the future states formed as a result of the westward movement would affect the balance of power in the Senate
B.
the South insisted that slavery should be allowed to spread into all new territories
C.
the North refused to let slavery spread into new territories
D.
the North wanted to put an end to slavery
查看完整题目与答案
【单选题】It can be inferred from the passage that before 1850s, all of the following were characteristic of higher education EXCEPT______.
A.
the elective system
B.
drilling
C.
strict discipline
D.
rote learning
查看完整题目与答案
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