2022知到答案 工程流体力学（山东大学） 最新完整智慧树知到满分章节测试答案

第一章 单元测试

1、 问题:Examples of primary quantities are which of the following?（ ）。
选项：
A:Size, Density, and Texture
B:Length, Mass, and Chemical Structure
C:Length, Time, Mass, and Temperature
D:None.
答案: 【
Length, Time, Mass, and Temperature
】

2、 问题:Which of the following selections are all British Gravitational System units?（ ）。
选项：
A:foot, pound, Newton, gallon
B:foot, second, pound, Rankin, and slug
C:foot, liter, Kelvin, Celsius, and pound
D:foot, minute, liter, Celsius, and kg
答案: 【
foot, second, pound, Rankin, and slug
】

3、 问题:Specific volume is the reciprocal of what measurement?（ ）。
选项：
A:volume
B:gravity
C:density
D:mass
答案: 【
density
】

4、 问题:How can the absolute pressure be found by using the gage pressure?（ ）。
选项：
A:by adding the gage pressure and the atmospheric pressure
B:by using the equation P = ρRT
C:by subtracting the atmospheric pressure from the gage pressure
D:can not
答案: 【
by adding the gage pressure and the atmospheric pressure
】

5、 问题:Fluids for which the shearing stress is not linearly related to the rate of shearing strain are designated as what?（ ）。
选项：
A:viscous fluids
B:Newtonian fluid
C:non-Newtonian fluid
D:None
答案: 【
non-Newtonian fluid
】

第二章 单元测试

1、 问题:For a body partially submerged in a fluid and at equilibrium, which of the following is a true statement?（ ）。
选项：
A:The weight of the body is equal to the weight of the volume of fluid displaced
B:The weight of the body is less than the weight of the volume of fluid displaced
C:The weight of the body is greater than the weight of the volume of fluid displaced
D:The specific gravity of the body is greater than the specific gravity of the fluid
答案: 【
The weight of the body is equal to the weight of the volume of fluid displaced
】

2、 问题:An inclined-tube manometer is being used as shown to measure the pressure in a pressurized tank. The tank is partially filled to a depth of 20 cm with a fluid of specific gravity = 0.78. The specific gravity of the manometric gage fluid is 3.5. The gage pressure in the headspace (kPa) when h = 8 cm is most nearly（ ）。
选项：
A:0.3
B:0.9
C:1.2
D:1.8
答案: 【
0.3
】

3、 问题:A clean glass tube is to be selected in the design of a manometer to measure the pressure of kerosene. Specific gravity of kerosene = 0.82 and surface tension of kerosene = 0.025 N/m. If the capillary rise is to be limited to 1 mm, the smallest diameter (cm) of the glass tube should be most nearly（ ）。
选项：
A:1.25
B:1.50
C:1.75
D:2.00
答案: 【
1.25
】

4、 问题:The figure shows two cylinders of diameter D and 2D, connected to each other and containing an incompressible fluid. The two cylinders are fitted with leak-proof pistons of weight W1 and W2 as shown. Which of the following is a correct expression?（ ）。
选项：
A:＝
B:=
C:=
D:=

答案: 【
=

】

5、 问题:The figure shows the relationship between shear stress and velocity gradient for two fluids, A and B. Which of the following is a true statement?（ ）。
选项：
A:Absolute viscosity of A is greater than that of B
B:Absolute viscosity of A is less than that of B
C:Kinematic viscosity of A is greater than that of B
D:Kinematic viscosity of A is less than that of B

答案: 【
Absolute viscosity of A is greater than that of B
】

第三章 单元测试

1、 问题:If a flow is unsteady, its ____ may change with time at a given location.（ ）。
选项：
A:Velocity
B:Temperature
C:Density
D:All of the above
答案: 【
All of the above
】