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【单选题】
Which statement is TRUE of the binding energy derived from enzyme-substrate interactions?
A.
It cannot provide enough energy to explain the large rate accelerations brought about by enzymes.
B.
It is sometimes used to hold two substrates in the optimal orientation for reaction.
C.
It is the result of covalent bonds formed between enzyme and substrate.
D.
Most of it is derived from covalent bonds between enzyme and substrate.
E.
Most of it is used up simply binding the substrate to the enzyme.
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【单选题】麻醉同侧下颌舌侧牙龈、黏骨膜、口底黏膜及舌前2/3部分,可行的阻滞麻醉方法是
A.
眶下神经阻滞麻醉
B.
颊神经阻滞麻醉
C.
鼻腭神经阻滞麻醉
D.
舌神经阻滞麻醉
E.
腭前神经阻滞麻醉
【判断题】故事画,指以佛经为依据的独立连环画。
A.
正确
B.
错误
【单选题】Using paper napkins is bad for the environment. So we should stop ___them
A.
to use
B.
used
C.
using
【单选题】Who should follow the guideline provided in the announcement?
A.
The actors and actresses playing in the show
B.
The audience of the performances
C.
The bartender
D.
The cameraman recording the show
【简答题】先序遍历先访问 ,然后遍历 ,最后再遍历
【判断题】Napkins should be spread on the lap when we eat over business meals.
A.
正确
B.
错误
【简答题】中序遍历先遍历 然后访问 ,最后再遍历 。
【判断题】In western countries, napkins should be tucked into clothing.
A.
正确
B.
错误
【简答题】后序遍历先遍历 ,然后遍历 ,最后再访问 。
【判断题】Napkins should be placed on the lap and can be tucked into clothing
A.
正确
B.
错误