High-Q | English פסיכומטרי

Unit 7

a room and out through many vents in the floor. This constant air movement, called laminar flow, is already used in some laboratory clean rooms. Because laminar flow is less drafty, it is also more comfortable for occupants, says Bejan.

18. According to the text, getting rid of indoor pollution is -

(1) virtually impossible (2) the main usage of super-computer simulations (3) against common sense (4) beyond the ability of typical vent flows

19. According to the second paragraph, which is the fate of polluted air when using typical vent flow?

(1) It is totally uninfluenced (2) It is completely replaced by fresh air (3) It may remain in the room being ventilated (4) It dissipates turbulently and unevenly

20. “Both situations” mentioned in line 16 are -

(1) two-dimensional air flow simulations (2) a single source of pollution, and a uniform dispersal of pollution (3) stagnant air cells and fresh air flow (4) real phenomena and super-computer simulations

21. The eye of a hurricane is mentioned in the forth paragraph as -

(1) an illustration of stagnant air cells (2) a possible result of slow diffusion (3) an example of a fast moving air-stream (4) another possible way of removing static contamination

22. All of the following are correct for laminar air flow except that -

(1) It improves the occupant‟s comfort (2) It does not create stagnant air cells (3) It uses diagonally aimed air jets (4) It is unidirectional

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