Suppose you want to invest in the U.S. Treasury bills (T-bills). The minimum denomination is $100,000 and you have only $1,000. Therefore, you choose to invest your $1,000 in U.S. T-bill mutual funds
A. polling resources and subdividing shares
B. providing information
C. clearing and settling payments
D. dealing with incentive problem
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In order to protect against a drop in price of the stocks you hold, you decide to lock in stock prices by signing a contract with financial intermediaries. What is the type of financial decision you m
A. Consumption and saving decision
B. Investment decision
C. Financing decision
D. Risk-management decision
原核生物DNA复制错误率低的原因中,解释错误的是()
A. DNA Pol I具有3’→5’外切酶活性
B. DNA Pol I及III均具有校对功能
C. DNA Pol III具有5’→3’外切酶活性
DNA Pol III具有3’→5’外切酶活性
下列同时具有校对、修复及缺口填补功能的酶是()
A. DNA pol V
B. DNA ligase
C. DNA pol δ
DNA pol I
列对大肠杆菌DNA聚合酶的叙述,不正确的是()
A. DNA Pol I可分为大小两个亚基
B. DNA Pol I具有5’→3’的外切酶活性
C. DNA Pol III在复制中链的延长阶段起主要作用
DNA Pol III由四个亚基组成