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【单选题】
关于自由空间传播说法正确的是( )。
A.
自由空间中电磁波的传播损耗与工作频率和传播距离有关
B.
工作频率增大一倍时，传播损耗将增加
C.
工作频率和距离都增大一倍时，传播损耗将增加
D.
自由空间传播与工作频率和距离无关
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参考答案：
举一反三
【单选题】Which composition of a typical powdered laundry detergent is added as a corrosion inhibitor
A.
Sodium carbonate
B.
Sodium silicate
C.
Sodium sulphate
D.
不知道
查看完整题目与答案
【单选题】Which kind of unemployment results from a change in the basic composition of the economy that also opens new positions for trained workers?______.
A.
Frictional unemployment
B.
Structural unemployment
C.
Cyclical unemployment
D.
None of the above
查看完整题目与答案
【单选题】Which of the following statements about the lipid composition of plasma membrane is wrong?
A.
Cholesterol is prominent in plasma membranes but barely detectable in mitochondrial membranes. Cardiolipin is a major component of the inner mitochondrial membrane but not of the plasma membrane.
B.
Phosphatidylserine, phosphatidylinositol, and phosphatidylglycerol are relatively minor components of most membranes but serve critical functions; phosphatidylinositol and its derivatives, for example, are important in signal transductions triggered by hormones.
C.
Sphingolipids, phosphatidylcholine, and phosphatidylethanolamine are present in most membranes but in varying proportions.
D.
Glycolipids, which are major components of the chloroplast membranes of plants, are also found in animal cells.
查看完整题目与答案
【单选题】( )是指多数社会公众对组织政策、行为、人员、产品所形成的看法和意见的总和。
A.
公共关系行为
B.
公共关系意识
C.
公众舆论
D.
公共关系状态
查看完整题目与答案
【单选题】Which vitamin isinvolved in the composition of the coenzyme of transaminase?
A.
Vit B 1
B.
Vit B 2
C.
Vit B 6
D.
Vit B 12
E.
Vit PP
查看完整题目与答案
【判断题】起幅指的是运动镜头的运动起的瞬间。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Following which one is composition of renal stone?
A.
Calcium carbonate
B.
Calcium sulphate
C.
Uric acid
D.
Magnesium oxalate
查看完整题目与答案
【单选题】Which of the following is true about the composition of the pork ribs ( )
A.
True ribs 1 ~ 7, false ribs 8 ~ 15
B.
True ribs 1 ～5， false ribs 6 ～15
C.
True ribs 1 ～8， false ribs 9 ～15
D.
True ribs 1 ～7， false ribs 8 ～14
查看完整题目与答案
【单选题】Which of the following is true of the composition of the International Court of Justice?
A.
It is composed of 15 judges.
B.
Its judges are elected to fifteen-year terms of office.
C.
Its members represent their governments.
D.
Its judges are elected by the European Commission.
查看完整题目与答案
【单选题】Examine the chemical composition of the tumor and choose which of the following sequences
A.
spectrum
B.
Fat suppression
C.
perfusion
D.
CT
查看完整题目与答案
相关题目：
【单选题】Which composition of a typical powdered laundry detergent is added as a corrosion inhibitor
A.
Sodium carbonate
B.
Sodium silicate
C.
Sodium sulphate
D.
不知道
查看完整题目与答案
【单选题】Which kind of unemployment results from a change in the basic composition of the economy that also opens new positions for trained workers?______.
A.
Frictional unemployment
B.
Structural unemployment
C.
Cyclical unemployment
D.
None of the above
查看完整题目与答案
【单选题】Which of the following statements about the lipid composition of plasma membrane is wrong?
A.
Cholesterol is prominent in plasma membranes but barely detectable in mitochondrial membranes. Cardiolipin is a major component of the inner mitochondrial membrane but not of the plasma membrane.
B.
Phosphatidylserine, phosphatidylinositol, and phosphatidylglycerol are relatively minor components of most membranes but serve critical functions; phosphatidylinositol and its derivatives, for example, are important in signal transductions triggered by hormones.
C.
Sphingolipids, phosphatidylcholine, and phosphatidylethanolamine are present in most membranes but in varying proportions.
D.
Glycolipids, which are major components of the chloroplast membranes of plants, are also found in animal cells.
查看完整题目与答案
【单选题】( )是指多数社会公众对组织政策、行为、人员、产品所形成的看法和意见的总和。
A.
公共关系行为
B.
公共关系意识
C.
公众舆论
D.
公共关系状态
查看完整题目与答案
【单选题】Which vitamin isinvolved in the composition of the coenzyme of transaminase?
A.
Vit B 1
B.
Vit B 2
C.
Vit B 6
D.
Vit B 12
E.
Vit PP
查看完整题目与答案
【判断题】起幅指的是运动镜头的运动起的瞬间。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Following which one is composition of renal stone?
A.
Calcium carbonate
B.
Calcium sulphate
C.
Uric acid
D.
Magnesium oxalate
查看完整题目与答案
【单选题】Which of the following is true about the composition of the pork ribs ( )
A.
True ribs 1 ~ 7, false ribs 8 ~ 15
B.
True ribs 1 ～5， false ribs 6 ～15
C.
True ribs 1 ～8， false ribs 9 ～15
D.
True ribs 1 ～7， false ribs 8 ～14
查看完整题目与答案
【单选题】Which of the following is true of the composition of the International Court of Justice?
A.
It is composed of 15 judges.
B.
Its judges are elected to fifteen-year terms of office.
C.
Its members represent their governments.
D.
Its judges are elected by the European Commission.
查看完整题目与答案
【单选题】Examine the chemical composition of the tumor and choose which of the following sequences
A.
spectrum
B.
Fat suppression
C.
perfusion
D.
CT
查看完整题目与答案
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