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【单选题】
All eukaryotic cells have five major classes of histones, differing in molecular weight and amino acid composition. They are:
A.
H1, H2, H3, H4 and H5
B.
H1A, H1B, H3, H4, and H5
C.
H1 , H2A, H2B, H3, and H4
D.
H1 , H2, H3A, H3B, and H4
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参考答案：
举一反三
【判断题】在配线子系统中、缆线既可以对绞电缆也可以用光缆。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Listen to Track 67.
A.
It is not obvious how whales find their way.
B.
Different whales have different ways of locating food.
C.
Whales have a poor sense of orientation.
D.
Scientists have not been able to track the whales.
查看完整题目与答案
【单选题】Grey whales have long been _______in the north Atlantic and hunting was an important causes for that.
A.
deprived
B.
extinct
C.
detained
D.
extinguished
查看完整题目与答案
【判断题】在配线子系统中,线缆既可以用双绞线电缆也可以用光缆。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Grey whales have long been ________ in the north Atlantic and hunting was an important cause for that.
A.
extincted
B.
extinguished
C.
detained
D.
deprived
查看完整题目与答案
【单选题】挖沟槽土方是指宽度小于()m,且长度大于宽度的()倍之上
A.
7，3
B.
3，3
C.
3，7
D.
7，7
查看完整题目与答案
【简答题】(16分)运用化学反应原理研究NH 3 的性质具有重要意义。请回答下列问题： （1）已知：①4NH 3 (g)+3O 2 (g)===2N 2 (g)+6H 2 O(g) H=-1266.8kJ·mol -1 ②N 2 (g)+O 2 (g)===2NO(g) H=180.5kJ·mol -1 写出氨高温催化氧化的热化学方程式 。 （2）氨气、空气可以构成燃料电池，其电池反应原理为4NH 3 +3...
查看完整题目与答案
【单选题】Grey whales have long been_____ in the north Atlantic and hunting was an important cause for that.
A.
deprived
B.
detained
C.
extinct
D.
extinguished
查看完整题目与答案
【判断题】在配线子系统中,线缆既可以用双绞线电缆也可用光缆。
A.
正确
B.
错误
查看完整题目与答案
【单选题】在 bash 中,可以用下列哪个命令来设置一个命令别名:( )
A.
alias
B.
unalias
C.
set
D.
unset
查看完整题目与答案
相关题目：
【判断题】在配线子系统中、缆线既可以对绞电缆也可以用光缆。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Listen to Track 67.
A.
It is not obvious how whales find their way.
B.
Different whales have different ways of locating food.
C.
Whales have a poor sense of orientation.
D.
Scientists have not been able to track the whales.
查看完整题目与答案
【单选题】Grey whales have long been _______in the north Atlantic and hunting was an important causes for that.
A.
deprived
B.
extinct
C.
detained
D.
extinguished
查看完整题目与答案
【判断题】在配线子系统中,线缆既可以用双绞线电缆也可以用光缆。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Grey whales have long been ________ in the north Atlantic and hunting was an important cause for that.
A.
extincted
B.
extinguished
C.
detained
D.
deprived
查看完整题目与答案
【单选题】挖沟槽土方是指宽度小于()m,且长度大于宽度的()倍之上
A.
7，3
B.
3，3
C.
3，7
D.
7，7
查看完整题目与答案
【简答题】(16分)运用化学反应原理研究NH 3 的性质具有重要意义。请回答下列问题： （1）已知：①4NH 3 (g)+3O 2 (g)===2N 2 (g)+6H 2 O(g) H=-1266.8kJ·mol -1 ②N 2 (g)+O 2 (g)===2NO(g) H=180.5kJ·mol -1 写出氨高温催化氧化的热化学方程式 。 （2）氨气、空气可以构成燃料电池，其电池反应原理为4NH 3 +3...
查看完整题目与答案
【单选题】Grey whales have long been_____ in the north Atlantic and hunting was an important cause for that.
A.
deprived
B.
detained
C.
extinct
D.
extinguished
查看完整题目与答案
【判断题】在配线子系统中,线缆既可以用双绞线电缆也可用光缆。
A.
正确
B.
错误
查看完整题目与答案
【单选题】在 bash 中,可以用下列哪个命令来设置一个命令别名:( )
A.
alias
B.
unalias
C.
set
D.
unset
查看完整题目与答案
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