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【单选题】
感染后可获得牢固免疫力的病毒是( )
A.
流感病毒
B.
乙型肝炎病毒
C.
丙型肝炎病毒
D.
乙型脑炎病毒
E.
登革病毒
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参考答案：
举一反三
【单选题】A System of Guaranteed Subsistence Minimum A hundred years ago it was assumed and scientifically 'proved' by economists that the laws of society made it necessary to have a vast army of poor and joble...
A.
the slow development of the economy
B.
the fault of the poor and the jobless themselves
C.
the lack of responsibility on the part of society
D.
the large number of uneducated people
查看完整题目与答案
【单选题】The author of this passage correlates the fisherman's use of the net to______.
A.
a scientific method
B.
a conceptual notion
C.
a controlled experiment
D.
a replicable event
查看完整题目与答案
【多选题】水利测功机的优点是
A.
结构相对简单
B.
体积较小
C.
制造成本低
D.
动态响应特性好
查看完整题目与答案
【多选题】期货交易的主要特征是（ ）。
A.
期货合约是由债券市场制定的．在债券市场内进行交易的合约
B.
期货合约是标准化的合约。合约中的各项条款都是标准化的，合约中只有价格一项是通过市场竞价交易形成的自由价格
C.
实物交割率低。期货合约中实物交割量占交易量的比重很小，一般小于5％
D.
期货交易实行保证金制度。交易者不需要付出与合约金额相等的全额货款，只需要付3％～5％的履约保证金
E.
期货交易所为交易双方提供交割服务和履约担保，实行严格的结算交割制度，违约的风险很小
查看完整题目与答案
【简答题】SECTION B ENGLISH TO CHINESE Directions: Translate the following text into Chinese. Scientific methodology is based on generating hypotheses and testing them to see if they make sense; in laboratories...
查看完整题目与答案
【判断题】如果在充电时发现车里散发出一种不同寻常的气味或者烟，请立即停止充电。
A.
正确
B.
错误
查看完整题目与答案
【单选题】According to the passage, _____is the key factor to making 'Nowcasts' a reality.
A.
scientific and technological advances such as radar, or satellites
B.
computer scientist
C.
meteorologists
D.
advanced computer programs
查看完整题目与答案
【简答题】给出定义：若函数f(x)在D上可导，即f′(x)存在，且导函数f′(x)在D上也可导，则称f(x)在D上存在二阶导函数，记f″(x)＝(f′(x))′，若f″(x)<0在D上恒成立，则称f(x)在D上为凸函数．以下四个函数在(0， )上不是凸函数的是________． ①f(x)＝sim x＋cos x     ②f(x)＝ln x－2x ③f(x)＝x 3 ＋2x－1       ④f(x)＝x...
查看完整题目与答案
【单选题】Which of the following is not mentioned as a necessary part to maintain America's scientific leadership?
A.
Money.
B.
Combination of various disciplines.
C.
Joint efforts of the most intelligent scientists.
D.
Favorable academic atmosphere.
查看完整题目与答案
【多选题】保险市场的特征有( )。
A.
直接的风险市场
B.
非即时清结
C.
保险公司为市场的主导者
D.
特殊的“期货”交易市场
查看完整题目与答案
相关题目：
【单选题】A System of Guaranteed Subsistence Minimum A hundred years ago it was assumed and scientifically 'proved' by economists that the laws of society made it necessary to have a vast army of poor and joble...
A.
the slow development of the economy
B.
the fault of the poor and the jobless themselves
C.
the lack of responsibility on the part of society
D.
the large number of uneducated people
查看完整题目与答案
【单选题】The author of this passage correlates the fisherman's use of the net to______.
A.
a scientific method
B.
a conceptual notion
C.
a controlled experiment
D.
a replicable event
查看完整题目与答案
【多选题】水利测功机的优点是
A.
结构相对简单
B.
体积较小
C.
制造成本低
D.
动态响应特性好
查看完整题目与答案
【多选题】期货交易的主要特征是（ ）。
A.
期货合约是由债券市场制定的．在债券市场内进行交易的合约
B.
期货合约是标准化的合约。合约中的各项条款都是标准化的，合约中只有价格一项是通过市场竞价交易形成的自由价格
C.
实物交割率低。期货合约中实物交割量占交易量的比重很小，一般小于5％
D.
期货交易实行保证金制度。交易者不需要付出与合约金额相等的全额货款，只需要付3％～5％的履约保证金
E.
期货交易所为交易双方提供交割服务和履约担保，实行严格的结算交割制度，违约的风险很小
查看完整题目与答案
【简答题】SECTION B ENGLISH TO CHINESE Directions: Translate the following text into Chinese. Scientific methodology is based on generating hypotheses and testing them to see if they make sense; in laboratories...
查看完整题目与答案
【判断题】如果在充电时发现车里散发出一种不同寻常的气味或者烟，请立即停止充电。
A.
正确
B.
错误
查看完整题目与答案
【单选题】According to the passage, _____is the key factor to making 'Nowcasts' a reality.
A.
scientific and technological advances such as radar, or satellites
B.
computer scientist
C.
meteorologists
D.
advanced computer programs
查看完整题目与答案
【简答题】给出定义：若函数f(x)在D上可导，即f′(x)存在，且导函数f′(x)在D上也可导，则称f(x)在D上存在二阶导函数，记f″(x)＝(f′(x))′，若f″(x)<0在D上恒成立，则称f(x)在D上为凸函数．以下四个函数在(0， )上不是凸函数的是________． ①f(x)＝sim x＋cos x     ②f(x)＝ln x－2x ③f(x)＝x 3 ＋2x－1       ④f(x)＝x...
查看完整题目与答案
【单选题】Which of the following is not mentioned as a necessary part to maintain America's scientific leadership?
A.
Money.
B.
Combination of various disciplines.
C.
Joint efforts of the most intelligent scientists.
D.
Favorable academic atmosphere.
查看完整题目与答案
【多选题】保险市场的特征有( )。
A.
直接的风险市场
B.
非即时清结
C.
保险公司为市场的主导者
D.
特殊的“期货”交易市场
查看完整题目与答案
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