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【单选题】
关于索引的 说 法正确的是( )。
A.
索引 对 来 说 ，可有可无
B.
索引是用来提高 查询 速度的
C.
索引是用来装 饰 表，是表格好看一点
D.
索引会影响更新的速度
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【单选题】First Planet from the Sun Mercury, the planet nearest the sun, is difficult to observe from the Earth because it rises and sets within two hours of the sun. ______【46】 Planetary scientists can estimat...
A.
Some regions on Mercury are heavily cratered, suggesting that they are very old surfaces that were probably formed about 4 billion years ago
B.
The crater was probably created by the impact of a large planetesimal when Mercury was forming
C.
Consequently, little was known about the planet until the Mariner 10 spacecraft made several flybys in 1974 and 1975
D.
Mercury is much smaller than the Earth
E.
The surface gravity is about one-third as strong as Earth's, and a thin atmosphere surrounds the planet
F.
These plains have relatively few impact craters (46)
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【单选题】结合平衡常数知识，Kb代表的是
A.
浓度平衡常数
B.
弱酸的平衡常数
C.
弱碱的平衡常数
D.
水的离子积
E.
沉淀-溶解平衡常数
查看完整题目与答案
【单选题】安装完Hadoop后,需要修改配置文件,需要把jdk的环境变量加载到哪个配置文件中?
A.
core-site.xml
B.
hadoop-env.sh
C.
mapred-site.xml
D.
hdfs-site.xml
查看完整题目与答案
【单选题】Which of the following is time of the recent discovery?
A.
The planet is not as protective as Jupiter.
B.
The planet is close to star 55 Cancri.
C.
The planet proves to be a gas planet.
D.
The planet is as large as Jupiter.
查看完整题目与答案
【单选题】下列不符合解剖学姿势的是
A.
身体直立
B.
两足并立，足尖向前
C.
双手掌心向内侧
D.
双上肢垂于躯干两侧
查看完整题目与答案
【单选题】打磨过程中不需要用到的
A.
打磨机
B.
砂纸
C.
刮刀
D.
碳粉指示剂
查看完整题目与答案
【单选题】( )是指按客户的要求将货物从储存区拣选出来,并按货物的目的地等方式货物进行分类的作业。
A.
分货
B.
拣货
C.
分拣
D.
复核
查看完整题目与答案
【单选题】下列不符合解剖学姿势的是
A.
身体直立
B.
两足并立 ， 足尖向前
C.
双手掌心向内侧
D.
双上肢垂与躯干两侧
查看完整题目与答案
【单选题】How did the little prince's planet look like?
A.
It wa a great planet.
B.
It was a small planet.
C.
It was a famous planet.
查看完整题目与答案
【简答题】Our planet is in trouble．Polluting industries and corporations are destroying our planet, resulting in increasing global temperatures, melting ice caps, and economic turmoil（混乱）．All across the country...
查看完整题目与答案
相关题目：
【单选题】First Planet from the Sun Mercury, the planet nearest the sun, is difficult to observe from the Earth because it rises and sets within two hours of the sun. ______【46】 Planetary scientists can estimat...
A.
Some regions on Mercury are heavily cratered, suggesting that they are very old surfaces that were probably formed about 4 billion years ago
B.
The crater was probably created by the impact of a large planetesimal when Mercury was forming
C.
Consequently, little was known about the planet until the Mariner 10 spacecraft made several flybys in 1974 and 1975
D.
Mercury is much smaller than the Earth
E.
The surface gravity is about one-third as strong as Earth's, and a thin atmosphere surrounds the planet
F.
These plains have relatively few impact craters (46)
查看完整题目与答案
【单选题】结合平衡常数知识，Kb代表的是
A.
浓度平衡常数
B.
弱酸的平衡常数
C.
弱碱的平衡常数
D.
水的离子积
E.
沉淀-溶解平衡常数
查看完整题目与答案
【单选题】安装完Hadoop后,需要修改配置文件,需要把jdk的环境变量加载到哪个配置文件中?
A.
core-site.xml
B.
hadoop-env.sh
C.
mapred-site.xml
D.
hdfs-site.xml
查看完整题目与答案
【单选题】Which of the following is time of the recent discovery?
A.
The planet is not as protective as Jupiter.
B.
The planet is close to star 55 Cancri.
C.
The planet proves to be a gas planet.
D.
The planet is as large as Jupiter.
查看完整题目与答案
【单选题】下列不符合解剖学姿势的是
A.
身体直立
B.
两足并立，足尖向前
C.
双手掌心向内侧
D.
双上肢垂于躯干两侧
查看完整题目与答案
【单选题】打磨过程中不需要用到的
A.
打磨机
B.
砂纸
C.
刮刀
D.
碳粉指示剂
查看完整题目与答案
【单选题】( )是指按客户的要求将货物从储存区拣选出来,并按货物的目的地等方式货物进行分类的作业。
A.
分货
B.
拣货
C.
分拣
D.
复核
查看完整题目与答案
【单选题】下列不符合解剖学姿势的是
A.
身体直立
B.
两足并立 ， 足尖向前
C.
双手掌心向内侧
D.
双上肢垂与躯干两侧
查看完整题目与答案
【单选题】How did the little prince's planet look like?
A.
It wa a great planet.
B.
It was a small planet.
C.
It was a famous planet.
查看完整题目与答案
【简答题】Our planet is in trouble．Polluting industries and corporations are destroying our planet, resulting in increasing global temperatures, melting ice caps, and economic turmoil（混乱）．All across the country...
查看完整题目与答案