在低压条件下,气体粘度随温度的升高而降低。()
- · 有5位网友选择 对,占比55.56%
- · 有4位网友选择 错,占比44.44%
A.(A)压力变化对气体粘度影响不明显;
B. (B)粘度随温度的升高而减小;
C. (C)粘度随相对分子质量的增大而增大;
D. (D)非烃类气体的粘度比烃类气体的粘度低
气体的粘度随压力增高而增高。在低压时,气体粘度随温度升高而增加,随着压力的增加,温度升高对粘度增大的影响越来越小,当压力很高时(100×105Pa以上),气体粘度随温度升高而降低,明显表现出类似于液体的性质。Table 1-13 shows the dynamic viscosity of methane at different pressures and temperatures. It can be seen from the table that the viscosity of gas increases with the increase of pressure. At low pressure, the gas viscosity increases with the increase of temperature. With the increase of pressure, the influence of temperature increase on the increase of viscosity becomes smaller and smaller. When the pressure is very high (100×105Pa and above), the gas viscosity decreases with the increase of temperature, showing obvious properties similar to liquid.
A.它的粘度随温度变化的幅度不要太大
B.它的粘度随温度变化的幅度不要太小
C.它的粘度随温度的增高而增高
D.它的粘度随温度的降低而降低
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