皮肤异常干燥见于
A.虚脱
B.休克
C.甲亢
D.风湿热
E.脱水
参考答案:E
解析:脱水可引起皮肤异常干燥。
-The two astronauts had been trained for long before theyflew to space.
-Oh, they____quite a lot of difficulties. [ ]
A. might go through
B.may go through
C. should have gone through
D. must have gone through
往含I-和Cl-的稀溶液中滴入AgNO溶液,沉淀的质量与加入AgNO溶液体积的关系如右图所示。则原溶液中c(I[-])/c(Cl[-])的比值为()。
A.(V2-Vl)/V1
B.V1/V2
C.V1/(V2-V1)
D.V2/V1