__________ and have low refractive indices, low dielectric constants, and low surface tensions has long been known by chemists.
A. Those fluorocarbons are more volatile and denser than corresponding hydrocarbons
B. That fluorocarbons are more volatile and denser than corresponding hydrocarbons
C. While fluorocarbons are more volatile and denser than corresponding hydrocarbons
D. When fluorocarbons are more volatile and denser than corresponding hydrocarbons
Answer:B
__________ and have low refractive indices, low dielectric constants, and low surface tensions has long been known by chemists.
A. Those fluorocarbons are more volatile and denser than corresponding hydrocarbons B. That fluorocarbons are more volatile and denser than corresponding hydrocarbons C. While fluorocarbons are more volatile and denser than corresponding hydrocarbons D. When fluorocarbons are more volatile and denser than corresponding hydrocarbons