问题
选择题
海水淡化可采用膜分离技术。如图所示，对淡化膜右侧的海水加压，水分子可以透过淡化膜进入淡水池，而海水中的各种溶质不能通过淡化膜，从而得到淡水。对加压后右侧海水成分进行分析，正确的是
A．海水的溶质质量分数增大
B．溶剂质量增多
C．海水质量不变
D．溶质质量增多
答案
答案：A
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海水淡化可采用膜分离技术。如图所示，对淡化膜右侧的海水加压，水分子可以透过淡化膜进入淡水池，而海水中的各种溶质不能通过淡化膜，从而得到淡水。对加压后右侧海水成分进行分析，正确的是
A．海水的溶质质量分数增大
B．溶剂质量增多
C．海水质量不变
D．溶质质量增多
答案：A
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| Yesterday was Saturday. Mr King __1__ his family to the People's Park in the __2__. They got up early and had __3__ quickly. After that they went to the park __4__ car. It was nine o'clock when they got there. There were many _5__ in the park. Lily __6__ the hill in the middle of the park. Lucy flew a kite __7__ some other children. Mr King and his wife were tired after five days' __8__. They sat under a tree and had a __9__. The King family had a __10__ time there. | ||||
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