A: low temperature, low salinity; high temperature, high salinity
B: low temperature, high salinity; high temperature, low salinity
C: high temperature, high salinity; low temperature, low salinity
D: high temperature, low salinity; low temperature, high salinity
E: both have equal temperature and salinity
举一反三
- If △H value of a reaction is positive, the conditions that must be a spontaneous process is(). A: △S value is positive and high temperature B: △S value is positive and low temperature C: △S value is negative and high temperature D: △S value of is negative and low temperature
- Questions 19-21 are based on the following passage. You now have 15 seconds to read the questions 19-21. What is the temperature of Bogota A: A high of 90 and a low of 75. B: A high of 96 and a low of 64. C: A high of 56 and a low of 48. D: A high of 93 and a low of 73.
- Mangroves live in coastal waters that: A: Are well protected from strong wave action B: Have high salinity at all times C: Are located in temperate regions with wide seasonal temperature fluctuations D: Have high amounts of nutrients
- For tool steel, the heat treatment is usually: () A: spheroidizing followed by quenching and low temperature tempering B: carburizing followed by quenching and low temperature tempering C: Quenching and high temperature tempering D: normalizing
- The heat treatment process after carburization is () A: Quenching + high temperature tempering B: Quenching + medium temperature tempering C: Quenching + low temperature tempering D: normalizing
内容
- 0
The common heat treatment on steels such as 65Mn and 60Si2Mn is . A: quenching + low temperature tempering B: quenching + medium temperature tempering C: quenching + high temperature tempering D: normalizing
- 1
Mercury freezes if it is cooled to＿. A: a too low temperature B: too low temperature C: a low too temperature D: too low a temperature
- 2
Water attains the boiling temperature quicker in the high elevations than at the low level. Because: A: . the air pressure is lower at high elevations B: . the gravitational force is low in the mountains C: . the sunlight is high in the higher elevations D: . All of them
- 3
Auto-tempering occurs after welding when （ ）. A: carbon content of weld is low B: cooling rate is slow C: peak temperature is high D: Ms is high
- 4
The water used in the ship's sanitation system is generally _____. A: low temperature fresh water B: high temperature fresh water C: water produced by water generator D: seawater