During heat treatment of steel, austenite transforms into martensite by .
A.annealing
B.austenitizing
C.quenching
D.normalizing
- · 有3位网友选择 B,占比30%
- · 有3位网友选择 C,占比30%
- · 有3位网友选择 A,占比30%
- · 有1位网友选择 D,占比10%
A.annealing
B.austenitizing
C.quenching
D.normalizing
citizen, and the unbearable heat in Africa did not deter him at all.
A、The temperature at which half of the maximum absorbance value of DNA at 260nm during heat denaturation
B、The temperature at which maximum absorbance value of DNA at 260nm during heat denaturation
C、The optimum temperature for DNA synthesis
D、High Tm value is related to low G-C content
E、The temperature to form DNA and RNA hybrid molecule
What caused the blackout in July 1977?
A. During a storm, lightning damaged cable.
B. Because of unemployment.
C. Heat waves had made people use too much electrical power.
D. Because the looters damaged the electricity supply.
A person being treated for shock should be wrapped in warm coverings to ______.
A.increase body heat
B.preserve body heat
C.avoid self-inflicted wounds caused by spastic movement
D.protect the person from injury during transportation
A、End of Heat implies that most parts in China are getting rid of the hot summer and entering autumn.
B、As the weather becomes cool during End of Heat, many people will feel languid and weary, which is called "summer weariness".
C、For fishermen, the End of Heat is a season of harvest. During this period, the Fishing Season Festival is held in regions along the coastline in Zhejiang province.
D、Duck has a sweet flavor and according to Chinese traditional medicine it has a "cool" nature. A folk tradition is to eat duck during the End of Heat period.
During the process of "burning" ATP, your muscles need ______.
A.to eliminate heat
B.carbon dioxide
C.lactic acid
D.to add energy
A heat wave is a period of time during which______.
A.the weather is much better than usual
B.the nights are much longer than usual
C.the weather is much hotter than usual
D.the days are much longer than usual
A.Baffle plates that have been bent during prior removal
B.Leaks m the cooler tube nest
C.Operating the engine while maintaining a high sea water outlet temperature
D.A punctured sea water strainer supplying cooling water to the heat exchanger
A.during the day
B.blazes down
C.far
D.experiencing
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