Three solid cubes of lead,each with edges10 centimeters long,are melted together in a level,rectangular shaped pan.The base of the pan has inside dimensions of 20centimeters by 30 centimeters,and the pan is 15 centimeters deep.If the volume of the solid lead is approximately the same as thev olume of tile melted lead,approximately how many centimeters deep is the melted lead in the pan()
A. 2.5
B. 3
C. 5
D. 7.5
E. 9
(3—4题共用题干) 患者男性,18岁,半年前发现有两处头皮呈银白色鳞屑状,刮去鳞屑后可见半透明薄膜样,若刮除此薄膜则可出现小的出血点,病损部位无脱发。 该患者最可能的诊断是
A. 寻常型银屑病
B. 脓疱型银屑病
C. 脂溢性皮炎
D. 湿疹
E. 白癜风
How long has the woman been in the US
A. 24 years.
B. 20 years.
C. 22 years.