X线平均波长（λmean）与最短波长（λmin）的关系，正确的是

A:λmean=3.5λmin B:λmean=3.2λmin C:λmean=2.8λmin D:λmean=2.5λmin E:λmean=2.2λmin

X线平均波长（λ）与最短波长(λ)的关系是

A:λ=3λ B:λ=2.5λ C:λ=2λ D:λ=1.5λ E:λ=λ

X线平均波长（λmean）与最短波长（λmin）的关系是（）

A:λmean=3λmin B:λmean=2.5λmin C:λmean=2λmin D:λmean=1.5λmin E:λmean=λmin

X线平均波长(λ_mean)与最短波长(λ_min)的关系是

A:λ_mean=3λ_min B:λ_mean=2.5λ_min C:λ_mean=2λ_min D:λ_mean=1.5λ_min E:λ_mean=λ_min

X线平均波长(λ_mean)与最短波长(λ_min)的关系是

A:λ_mean(下标)＝3λ_min B:λ_mean＝2.5λ_min C:λ_mean＝2λ_min D:λ_mean＝1.5λ_min E:λ_mean＝λ_min

X线平均波长(λ_mean)与最短波长(λ_min)的关系是

A:λ_mean(下标)＝3λ_min B:λ_mean＝2.5λ_min C:λ_mean＝2λ_min D:λ_mean＝1.5λ_min E:λ_mean＝λ_min

Individual freedom does not (in any sense) (mean that) you can (do what) you like (at your free will).（　）

A:in any sense B:mean that C:do what D:at your free will

Preferences Vary on Circumstances of Dying 　　Among terminally(晚期)ill people，attitudes differ on what they think constitutes a ____(51)or bad death，the results of a new study suggest Dr．Elizabeth K Vig of the University of Washington in Seattle and colleagues interviewed 26men with____(52)heart disease or cancer The men were asked to describe good and Bad deaths,and they also answered____(53)about their preferences for dying“In this small study，terminally ill men described good and bad deaths___(54) Vig said”They did not hold the same views about such issues____(55)the presence of others at the very end of life or preferred location of death. 　　Many of the men considered____(56) in their sleep to be a good death．The reasons were varied and included not____(57)that death was imminent(即将发生的)，and that death would be painless. 　　For close to half of the men，a prolonged(拖延的)death was______(58)abad death Some of the men associated a prolonged death with prolonged pain，______(59)others thought a prolonged death would be difficult for their families. 　　Most men said that their_____(60) were very important to them，but this did not mean that they wanted relatives close at the_____(61) of death. " Valuing family did not also___(62)wanting family present at the very end of life," Vig said. 　　"In fact，some expressed concerns____(63)burdening loved ones，Vig said.For instance，some men were worried about the emotional or_____(64) impact on their family members，according to the Washington researcher Some were worried____(65)their need for care would be a burden on their families，she said

A:stand B:mean C:help D:quit