皮皮学,免费搜题
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【单选题】
关于原发性肺结核的描述,下列哪项是错误的
A.
初次感染结核菌而在肺内发生的病变
B.
综合征形成
C.
及淋巴结不发生干酪样坏死
D.
可发生血行播散到各器官
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【单选题】向一弱三元酸水溶液中加入一定量强酸,并测得其pH。下列关系式不正确的为:
A.
B.
C.
【简答题】A specimen of nickel powder is studied by X—ray diffractometry.The sample is irradiated with Cr Kα radiation,which has a wavelength,λ,of 2.29 .Only three diffraction peaks are observed in total:(111),...
【判断题】线性规划问题的基本解就是基本可行解。()
A.
正确
B.
错误
【单选题】线性规划问题的可行解( )是基本可行解
A.
一定
B.
一定不
C.
不一定
D.
无法判断
【单选题】Most conducting materials such as copper, aluminum, iron, nickel, and tungsten _____.
A.
increase in resistance with increased temperature
B.
increase in resistance with decreased temperature
C.
decrease in resistance with increased temperature
D.
increase in conductance with increased temperature
【单选题】nickel
A.
n. 镍 ; 镍币
B.
n. 叙述 , 故事
C.
n. 恶梦
D.
n. 标准
【单选题】All the following are mainly produced in Canada EXCEPT
A.
nickel.
B.
zinc.
C.
asbestos.
D.
steel.
【简答题】nickel的意思是___________.
【单选题】Canada is the worlds ______producer of nickel, zinc, and asbestos.
A.
primary
B.
second
C.
third
D.
fourth
【单选题】下列逻辑代数基本运算关系式中不正确的是( )。
A.
A+A=A
B.
A·A=A
C.
A+0=0
D.
A+1=1
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