a surface, it makes long stripes or marks on the surface.
A: echoes
B: clings
C: strips
D: pits
举一反三
- 中国大学MOOC: In art, _________ means the last covering of paint, polish, etc. that is put onto the surface of something; the condition of the surface.
- On the ideal conductor surface, the relationship between the electric field lines and the conductor surface is A: the electric field lines is always pertendicular to the conductor surface. B: the electric field lines is always parallel to the conductor surface. C: there is no electri field lines exsited. D: unable to determine the relationship.
- If the electric flux through a closed surface is 0, then there is no net charge inside the surface. A: 正确 B: 错误
- The electric potential inside a charged solid spherical conductor in equilibrium A: is always zero. B: is constant and equal to its value at the surface. C: decreases from its value at the surface to a value of zero at the center. D: increases from its value at the surface to a value at the center that is a multiple of the potential at the surface
- In<br/>a strain ellipsoid for rock deformation, the maximum strain axis is<br/>parallel to() A: the<br/>maximum flattening surface B: the<br/>maximum tensile surface C: the<br/>maximum stretching direction of minerals D: the<br/>maximum shearing surface
内容
- 0
中国大学MOOC: If the electric flux through a closed surface is 0, then there is no net charge inside the surface.
- 1
The principles for machining sequence of each surface should be( )<br/>and perform rough machining before finish machining. A: perform datum surface machining before that of other surfaces B: perform main functional surface machining before less important surface machining C: perform plane surface machining before hole surface machining D: perform complex surface machining before simple surface machining
- 2
______ is covered with heavy snow. A: The surface of earth B: The earth’s surface C: The earths’ surface D: The surface
- 3
On the surface of a perfect conductor, the normal component of the electric displacement vector is A: continuous with the normal component of the electric displacement vector inside the conductor B: uncertain C: equal to the surface density of free charge on the conductor surface. D: equal to zero
- 4
_____ is covered with heavy snow. A: The earth’s surface B: The surface of earth C: The surface earth D: The earth surface