某同学为测盐水的密度,则盐水的体积可用___________测量,盐水的质量可用_____________测量。最终结果应多次测量求___________。
量筒;天平;平均值
People want to change the wetlands into farms and buildings, so there is _______ space for wildlife. [ ]
A. more and more
B. fewer and fewer
C. little and little
D. less and less
下列哪种病变,不出现局部肾影增大表现()
A.肿瘤
B.囊肿
C.局限性肾积水
D.驼峰肾
E.肾梗死