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【判断题】
没有生物,土壤就不能形成。A.
正确
B.
错误
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举一反三
【单选题】The duration of effective refractory period of ventricular cell mainly depends on：
A.
amplitude of phase 0 depolarization
B.
level of threshold potential
C.
duration of phase 2 (plateau)
D.
function of Na+ -K+ pump
【单选题】The presence of an embedded call option will decrease the effective duration of a bond:
A.
only when interest rates are rising.
B.
only when interest rates are falling.
C.
for both rising and falling interest rates.
【单选题】The duration of effective refractory period of ventricular cell mainly depends on：
A.
duration of phase 2 (plateau)
B.
amplitude of phase 0 depolarization
C.
level of threshold potential
D.
function of Na+ -K+ pump
【简答题】v. make something continue without changing or being harmed
【单选题】The duration of effective refractory period (ERP) of cardiac muscle cells is mainly determined by ( )
A.
velocity of depolarization during 0 period (quick depolarization period)
B.
size of overshoot value
C.
duration of plateau
D.
level of resting potential (RP)
E.
level of threshold potential (TP)
【简答题】They are short of steel without_____________ they cannot continue with the production.
【简答题】Bond 1 has an effective duration of 3.7. If the bond yield changes by 100 basis points, the price of the bond will change by: A. approximately 0.37%. B. approximately 3.7%. C. exactly 0.37%.
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