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【单选题】
关于蛋白质的下列叙述中有错误的是（ ）A.
蛋白质的水溶液具有胶体的性质
B.
所有的蛋白质都能与HNO 3 发生颜色反应
C.
天然蛋白质水解的最终产物是α-氨基酸
D.
天然蛋白质分子中既含-NH 2 ，又含-COOH
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【单选题】The Wilson equation is the most widely used equation in engineering design. Which of the following statement is incorrect?
A.
The high calculation accuracy of Wilson equation is due to the introduction of the concept of local composition and considering the effect of temperature on activity coefficient.
B.
The Wilson equation is suitable for Polarity and association system
C.
The thermodynamic properties of ternary system can be calculated by Wilson equation with parameters from binary system
D.
Wilson equation can be used for liquid-liquid equilibrium system
【多选题】A fundamental differential equation obtained by combining the ( ).
A.
continuity equation
B.
flow law
C.
equation of state
D.
equation of motion
【单选题】Choose the better version of the sentences that best improve the original sentences. As we know, the current equation is different in CCM or DCM with different inductance, but no paper proposed the an...
A.
T he current equation is different in CCM or DCM with different inductance, but no paper proposed the analytical equation to describe it. This paper is devoted to the accurate equation of the inductor without referring to how to design the inductor and select the power device and its heat sink.
B.
Although the current equation is known to be different in CCM or DCM with different inductance, no paper proposed the analytical equation to describe it. This paper is devoted to the accurate equation of the inductor with no reference to how to design the inductor and select the power device and its heat sink.
C.
Although the current equation is known to be different in CCM or DCM with different inductance, no paper proposed the analytical equation to describe it. This paper is devoted to the accurate equation of the inductor without referring to to how to design the inductor and select the power device and its heat sink.
D.
Although the current equation is known to be different in CCM or DCM with different inductance, no paper proposed the analytical equation to describe it. This paper is devoted to the accurate equation of the inductor with no reference to how to design the inductor and how to select the power device and the heat sink.
【简答题】The most widely used equation for estimating visibility is the Koschmeider equation: (2.4) where L V is the visual range, the distance at which an average person can barely distinguish a dark object (...
【简答题】Indicate whether the equation determines y to be a function of x . Match each equation with the corresponding answer. Choose the correct letter for each question.
【简答题】数量方程(quantity equation)
【简答题】Choose an equation and express it using one sentence.
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