- 搜标题
- 搜题干
- 搜选项
单项选择题
This indicates that there is a possibility of obtaining fluid density from sound speed measurements and suggests that it is possible to measure sound absorption with an ultrasonic cell to determine oil viscosity.
This indicates that there is a possibility of obtaining fluid density from sound speed measurements and suggests that it is possible to measure sound absorption with an ultrasonic cell to determine oil viscosity.
In this sentence, the writer presents
A．Implication
B．Research aim
C．Methodology
D．Results and achievement
B．Research aim
C．Methodology
D．Results and achievement
