名词解释题柠檬酸循环(citric acid cycle)

名词解释题
柠檬酸循环(citric acid cycle)

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柠檬酸循环 名词解释

CYCLE81,CYCLE82,CYCLE83指令均为钻孔循环指令(SIEMENS系统)。

One hertz is equal to one ( )A、cycle per centimeterB、cycle per meterC、cycle per secondD、cycle per eV

下列指令中,()是毛坯切削循环指令(SIE州田NS系统)。A、CYCLE93B、CYCLE95C、CYCLE96D、CYCLE97

关于CYCLE93指令,()(SIEMENS系统)。A、CYCLE93是切槽循环指令B、使用CYCLE93指令可以简化编程C、CYCLE93指令可实现断屑加工D、CYCLE93指令可用于切削圆锥面和圆弧面E、CYCLE93可用于径向沟槽的切削加工

钻镗循环的深孔加工时需采用间歇进给的方法,每次提刀退回安全平面的应是()。(SIEMENS系统)A、CYCLE81B、CYCLE82C、CYCLE83D、CYCLE84

核糖核酸[Ribonucleic acid (RNA)]

核酸(Nucleic acid)

在需氧呼吸过程中,需要水与生成水分别发生在()A、糖酵解和柠檬酸循环B、柠檬酸循环和电子传递链C、电子传递链和糖酵解D、电子传递链和柠檬酸循环

枸溶性磷 citric acid soluble phosphorus

柠檬酸循环(citric acid cycle)

脂肪酸(fatty acid)

灰色胡敏酸 grey humic acid

柠檬酸循环

下面指令中,()是切槽循环指令(SIEMENS系统)。A、CYCLE93B、CYCLE95C、CYCLE96D、CYCLE97

酸洗除垢acid descaling

尽管O2没有直接参与柠檬酸循环,但没有O2的存在,柠檬酸循环就不能进行,为什么?

单选题A container holds 8 pints of a solution which is 25% acid. If 2 quarts of pure acid are added to the container, what percent of the resulting mixture is acid? (1 quart=2 pints)A50B20C40D45E35

名词解释题枸溶性磷 citric acid soluble phosphorus

问答题尽管O2没有直接参与柠檬酸循环,但没有O2的存在,柠檬酸循环就不能进行,为什么?

单选题The size of the exhaust valve opening is ()Amost critical in a four-stroke cycle diesel engineBmost critical in a two-stroke/cycle diesel engineCmost critical in a four-stroke/cycle diesel engine if it is turbochargedDof equal importance in a two-stroke/cycle diesel engine as in a four-stroke/cycle diesel engine

名词解释题柠檬酸循环

单选题The electrolyte in a lead-acid storage battery consists of distilled water and ().Ahydrogen chlorideBcalcium chlorideCsulfuric acidDmuriatic acid

单选题Proper lubrication of the main bearing is more easily obtained in a single acting four-stroke/cycle diesel engine than in a single acting two-stroke/cycle diesel engine because ()Abearing pressure in a four-stroke/cycle acting single diesel engine is continually reversedBbearing pressure in a two-stroke/cycle single acting diesel engine is continually reversedCthe maximum bearing pressure is higher in a single acting two-stroke/cycle diesel engineDtwo-stoke/cycle diesel engines require more complicated lubrication piping

单选题In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in ().Atwo crankshaft revolutions in a two-stroke/cycle engineBtwo power strokes in a two-stroke/cycle engineCone power stroke in a two-stroke/cycle engineDtwo piston strokes in a two-stroke/cycle engine

单选题Which of the following statements is true regarding the installation of piston rings on two-stroke/cycle, diesel engines as compared to four-stroke/cycle, diesel engines?()AIn a two-stroke/cycle engine, the rings run hotter, requiring the end gap to be greaterBSome provision must be made in a two-stroke/cycle engine to keep the rings from binding in the portsCNo gap is required to exist between the ends of the ring when cold in a two-stroke/cycle engine, but a small gap is required in a four-stoke/cycle engineDThe gaps should be staggered on either side of a piston in a two-stroke/cycle engine, while staggering is not necessary in a four-stroke/cycle engine

单选题A person who gets battery acid in an eye should IMMEDIATELY wash the eye with().Aboric acid solutionBwaterCbaking soda solutionDammonia