常用（）来测量垂直度。
A.90°角尺
B.高度游标卡尺
C.线锤
D.万能角尺
参考答案：C
He made another wonderful discovery, ________ of great importance to science.[ ]
A．which I think is
B．which I think it is
C．which I think it
D．I think it is
统计患者的出液量时应包括（）
A.尿量
B.粪便中的水分
C.汗液
D.呕吐量
E.出血量
