单位物质的量的物质所具有的质量叫（）。
参考答案：摩尔质量
Was it at the beginning _____ you made the promise ____ you would do all to help
make it?
A．that; that
B．when; that
C．that; when
D．when; when
"肾自截"现象见于下列哪种疾病（）
A.肾盂肾炎
B.肾结核
C.肾透明细胞癌
D.肾蒂损伤
E.输尿管损伤
