描述CH3—CH=CH—C≡C—CF3分子结构的下列叙述中，正确的是 A．6个碳

简述技术发明与技术创新的关系？

当地基承载力较高、高度在5～6m以下时，水闸翼墙的结构形式应采用（）。

A.重力式 

B.悬臂式 

C.扶壁式 

D.空箱式

正常血浆中含量最多的阳离子和阴离子是

A．Na+和HCO3-
B．Na+和HP03-
C．Na+和S02-
D．Na+和C1-
E．K+和CI-

变形织构

A put with a strike price of $75 sells for $10. Which of the following statements is FALSE The greatest :()

A. profit the writer of the put option can make is $10. 

B. profit the buyer of a put option can make is $65. 

C. loss the writer of a put option can make is $75.