Modern technology, including advanced irrigation systems, desalinization and air conditioning, has made deserts much more hospitable, In the United States and Israel for example, desert [r]
a. but b. and c. so d. however 23. Mrs. Lindon has ________ that she is unable to get a job. a. but not enough education b. so little education c. however little education d. such little education 24. That small car, ________, is advertised in many current magazines.
Some economy in size can be effected by extended surfaces on the refrigerant side, usually in the form of low integral fins formed on the tubes. On the water side, swirl strips can be fitted to promote turbulence, but these interfere with maintenance cleaning and are not much in favour. Water[r]
15. The water seal tank has a float control to limit the quantity of water to the seals when the machine is in operation. The operator must open the manual valve supplying the seal water tank before startup and must close the manual valve on[r]
3. a. compound b. route c. house d. south 4. a. dune b. hummock c. shrub d. buffalo 5. a. west b. between c. growth d. which Choose a, b, c, or d that best completes each unfinished sentence, substitutes the underlined part, or has a close meaning to the original on[r]
Amplifier(s). The measured electric signal from the temperature sensor is amplified at the solid state amplifier to produce an output for indication. The number of amplifiers is matched with the number of the sensors used in the temperature indication system. Indicator. An analog-type indicator,[r]
the production of CFCs ceased in the United States on January 1, 1996. All refrigeration systems using CFC refrigerants will be replaced by or converted to non-CFC refrigerant systems. For the sake of safety, smoke control systems and stairwell pressurization are items to be c[r]
25. We live in the same building ________ we have hardly seen each other a. and b. therefore c. but d. so 26. I went to buy a Rolling Stones CD ________ the shop didn't have it. a. and b. but c. therefore d. so 27. Anna needed some money, ________, she took a[r]
a. No one can survive in both hot and cold deserts. b. Modern technology makes deserts more hospitable. c. In the United States, all deserts are quite uninhabited. d. There are no deserts in Israel. 36. Which is not a problem in cold deserts? a. Starvation b. Hypothermia c. Frost[r]
19. Cleaning chilled water spray header. The chilled water spray header is removed and cleaned by the same procedure as just outlined. However, even more care must be exercised in handling this header since it is possible not only to damage th[r]
15. The water seal tank has a float control to limit the quantity of water to the seals when the machine is in operation. The operator must open the manual valve supplying the seal water tank before startup and must close the manual valve on[r]
When first started, a refrigeration system will operate at a higher suction temperature and pressure than normal operating conditions and consequently a higher discharge pressure, taking considerably more power. Drive motors must be sized accordingly to provide this pulldown p[r]
a. through / in b. from / with c. on / into d. in / for 17. More and more ________ are very excited at discovering as many interesting things in the deserts as possible. a. explores b. explorations c. explorers d. exploratory 18. Can you make a ________ estimate of ho[r]
Horizontal pipes should slope slightly downwards in the direction of flow, where this can be arranged. If a suction or discharge line has to rise, the size may be decreased to make the gas move faster. In the case of a lift of more than 5 m, a trap should be formed at the bottom to collect any oil w[r]
Titles in the Modern Diesel Technology Series include: MDT: Electricity and Electronics, by Joe Bell; ISBN: 1401880134 MDT: Heating, Ventilation, Air Conditioning and Refrigeration, by J[r]
American Society of Heating, Refrigeration, and Air-Conditioning Engineers ASHRAE Handbook, 1999 HVAC Applications, Chap.. ASHRAE Handbook, 2001 Fundamentals, Chap.[r]
Dry impingement filters cannot be effectively cleaned and will usually be replaced when dirty. Thin filters of this type are used on some package air-conditioners and much of the dirt can be dislodged by shaking, or with a vacuum cleaner. The problem of air filtration on[r]
258 Refrigeration and Air-Conditioning no extra start-up capacity is required. The general practice of using a single coil for cooling and dehumidification without reheat, for comfort cooling, will give design balance conditions only at full load conditions. Sl[r]