- 搜标题
- 搜题干
- 搜选项
单项选择题
More than one stage of evaporation can take place by admitting the sea water into chambers with progressively _____ pressure in the flash evaporator.
More than one stage of evaporation can take place by admitting the sea water into chambers with progressively _____ pressure in the flash evaporator.
A.lower
B.higher
C.the lower
D.the higher
A.
A.lower
B.higher
C.the
B.the
A.lower
B.higher
C.the
B.the
