下列关于α—螺旋的叙述,哪一项是错误的?
A. 氨基酸残基之间形成的=C=O与H—N=之间的氢键使α—螺旋稳定
B. 减弱侧链基团R之间不利的相互作用,可使α—螺旋稳定
C. 疏水作用使α—螺旋稳定
D. 在某些蛋白质中,α—螺旋是二级结构中的一种结构类型
E. 脯氨酸和甘氨酸的出现可使α—螺旋中断
The ________ product level answers the question of what is really being bought.
A. Core
B. Supportive
C. Facilitating
D. Augmented
The additional consumer services and benefits built around the actual product are called the:
A. Core product
B. Augmented product
C. Facilitating product
D. Supportive product
In the joining phase of the customer delivery system:
A. The customer arrives at the service location
B. The customer consumes the service
C. The customer refers new customers to the service
D. The customer makes the initial inquiry contact
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