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相关试题
- 1.Which is wrong about the black hole?选项： A:The temperature of the black hole is only dependent on the quality characteristic of the black hole.; B:Particles don’t come from the black hole.; C:The black hole satisfies the unsubtracted area theorem.; D:There is not radiation of the black hole.
- 2.Virtual contion(MMC Concept) is calculated for a hole by the following fomula:选项： A:MMC of the hole minus the geometric tolerance applicable at MMC; B:MMC of the hole plus the geometric tolerance applicable at MMC; C:MMC of the hole divided by the geometric tolerance applicable at MMC; D:MMC of the hole multiplied by the geometric tolerance applicable at MMC
- 3.A transition fit is one in which the shaft is. 选项： A:the same size as the hole B:larger than the hole C:smaller than the hole
- 4.What is the diameter relationship between hole and bolt?选项： A:the hole diameter should be larger than bolt diameter B:the hole diameter should be less than bolt diameter C:the hole diameter should be equal to bolt diameter D:the hole diameter should be 1.1times of bolt diameter
- 5.What is the diameter relationship between hole and bolt?选项： A:the hole diameter should be equal to bolt diameter B:the hole diameter should be larger than bolt diameter C:the hole diameter should be less than bolt diameter D:the hole diameter should be 1.1times of bolt diameter
- 6.We filmed it by cutting a tiny little hole in the base of the flower.选项： A:We filmed it by cutting a tiny little hole in the base of the flower.; B:We filmed it by cutting a tiny little hole in the base of the flower.; C:/; D:/
- 7.#236102 Make sure that the diameter of the hole is less than the specified value. 选项： A:Ensure that the hole's diameter does not exceed the specified value. B:Make certain that the diameter of the hole is within the limits of action. C:Confirm that the specified value is smaller than the diameter of the hole.
- 8.Prior to making the hole, make sure that the point of the drill bit is sharp. 选项： A:Before you make the hole, make sure that the point of the drill is sharp. B:After you make the hole, make sure that the point of the drill is sharp. C:In front of making the hole, make sure that the point of the drill is sharp.
- 9.In case 3, the depth of the stop hole is equal to () 选项： A、thickness of the component B、the diameter of the hole C、the length of the crack D、the depth of the crack.
- 10.Look, there is a hole ________the wall.
- 11. There is a hole ______the wall.
- 12. Whatis a blind hole?
- 13.The well with the change of bottom hole structure and oil layer property near the bottom hole is called (1). 选项： A、Imperfect well B、poor well C、Abandoned well D、Defective well
- 14.Which statement of recombination is true? 选项： A:The electron falls from the VB to the CB to fill the hole.; B:The electron falls from the CB to the VB to fill the hole.; C:The hole falls from the CB to the VB to fill the electron.; D:The electron in the VB is lost.
- 15.When a pattern of the holes is positioned to a datum feature of size such as a hole and thid datum feature is referenced at MMC ,as the datum feature(hole) grows:
- 16.Can you see the hole _____ the wall?
- 17.to make a hole through something______
- 18.When the White Hole Effect occurs, pilots should
- 19.What are the features of a reverse biased pn junction?选项： A:The photogenerated electron and hole drift across SCL.; B:The photogenerated electron and hole drift but the voltage cause them to diffuse back and the net current is zero; C:Photogeneration inside the SCL generates an electron and a hole which drift to cause a photocurrent.; D:When photogeneration occurs in the neutral region. The electron has to diffuse to the depletion layer and drift across SCL.
