旋转式黏度计基本结构有（）
A.力矩测量系统
B.样本传感器
C.转速控制与调节系统
D.计算机控制系统
E.恒温控制系统
参考答案：A, B, C, E
Jane was disappointed that most of the guests_______when she _____at the party.
A．left; had arrived
B．left; arrived
C．had left; had arrived
D．had left; arrived
下列哪种标本最适合做尿胆原检验（）
A.随机尿
B.餐后2小时尿
C.晨尿
D.12小时尿
E.24小时尿
