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【单选题】
以下说法错误的是( )。A.
当某旅游产品的需求富有弹性时，降低其价格会增加总收益。
B.
对需求富有弹性的旅游产品在价格上宜采用“薄利多销”的策略。
C.
当某旅游产品的需求缺乏弹性时，总收益与价格同方向变化。
D.
对缺乏弹性的商品，要提高收益，可以采取降低价格的策略。
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【简答题】(visitar) ______ Hangzhou. (Recorrer)_______ sus ciudades y sus pueblos. (descansar) ______ en sus playas. (vivir) ______ unos días mágicos.
【单选题】¡Que dejen aquí sus sonrisas y amistades, pero no olviden sus objetos de valor!
A.
欢迎大家把微笑和友谊留下，但不要遗忘了你们的随身物品。
B.
欢迎大家把微笑和友谊留下，但不要遗忘了你们的贵重物品。
C.
欢迎大家把微笑和友谊留下，但不要遗忘了你们的日常物品。
【多选题】Which of the statements are wrong for Quantitative PCR using SYBR green?
A.
SYBR green is used which binds on single stranded DNA molecules
B.
SYBR green bind to double-stranded DNA
C.
The quantity of DNA is measured by measuring the amount of fluorescence of SYBR green
D.
SYBR green approach can quantify the target DNA products specifically.
【简答题】Which one is wrong about ρ factor:A. Rho is a ring-shaped single-stranded RNA binding protein, like SSB B. Rho binding can wrest the RNA from the polymerase-template complex using the energy from ATP ...
【简答题】Sus reuniones eran bimensuales y sus informes,________
【单选题】Single-stranded binding proteins (SSB) bind to the outer backbone of DNA during replication. What would you predict about SSBs?
A.
They contain arginine and lysine residues
B.
They hydrolyze phosphodiester bonds
C.
Sequence-specific binding
D.
They form covalent bonds to sugars
【单选题】Which of the following is not a characteristic of prokaryotic single stranded DNA binding proteins?
A.
They are not essential for cell replication.
B.
They stimulate homologous DNA polymerase.
C.
They aid helicase action.
D.
They keep DNA strands from annealing.
E.
They bind more tightly to ssDNA than to dsDN
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