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【单选题】
下列关于金属晶体的叙述正确的是(  )
A.
常温下,金属单质都以金属晶体形式存在
B.
金属离子与自由电子之间的强烈作用,在一定外力作用下,不因形变而消失
C.
钙的熔沸点低于钾
D.
温度越高,金属的导电性越好
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参考答案:
举一反三
【多选题】人工铺设常号码有砟道岔中,属于准备工作的有
A.
熟悉图纸
B.
整理料具
C.
桩位测设
D.
摊平道砟
【单选题】控制程序执行顺序的寄存器是______位寄存器。
A.
8
B.
16
C.
32
D.
4
【简答题】控制程序执行顺序的寄存器是 ,是 位寄存器
【单选题】Which of the following statements is TRUE?
A.
The word 'rubbish' will soon disappear from dictionaries.
B.
Dangerous wastes can be recycled into nothing but energy.
C.
To recycle paper and rubber will still be impossible even with the new recycling methods.
D.
Big cities will soon have their own recycling plants.
【单选题】双打发球应多采用发( )球。
A.
半高球
B.
平高球
C.
后场高球
D.
网前球
【单选题】Which of these energy source is NOT dervied from the Sun?
A.
Coal
B.
Nuclear Power
C.
Wave Energy
D.
Oil
【单选题】Which of the following is an example of discrete data from a primary source?
A.
A report in a newspaper giving retail sales for the month
B.
An eye witness account of the number of customers
C.
A website showing the average height for children aged 7
D.
A colleague’s measurement of the distance from the office to the head office
【判断题】大号码道岔进行机械铺设时需分块运输。
A.
正确
B.
错误
【简答题】控制程序执行顺序的寄存器是PC,是16位寄存器
【简答题】What are the two assumputions in the example of jelly bean?
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