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【单选题】
如图曲线a、b表示两类生物种群密度与存活率之间的关系。下列分析错误的是 [     ]
A.
曲线a代表的种群个体一般体型较大，营养级较高
B.
依据曲线b，人工养蜂时种群密度中等最好
C.
对大型动物迁地保护，迁移的种群密度不宜过大
D.
种群密度为d时，曲线b代表的种群个体间竞争最剧烈
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【单选题】It is commonly argued that national defense is a public good. Nevertheless, the weapons used by the U.S. military are produced by private firms. We can conclude that
A.
resources would be used more efficiently if the government produced the weapons.
B.
resources would be used more efficiently if private firms provided national defense.
C.
weapons are rival in consumption and excludable, but national defense is not rival in consumption and not excludable.
D.
national defense is rival in consumption and excludable, but weapons are not rival in consumption and not excludable.
查看完整题目与答案
【单选题】关于小儿呼吸功能特点,以下哪项不正确( )
A.
肺活量小
B.
潮气量小
C.
每分通气量按体表面积计算与成人接近
D.
气体弥散量小
E.
呼吸道阻力小
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【单选题】下列关于鼻咽癌说法哪一项是错误的:( )
A.
60%的病人首发症状为颈淋巴结肿大
B.
好发于咽隐窝及顶前壁
C.
早期出现双侧颈深上群淋巴结肿大
D.
EB病毒血清学检查可帮助诊断
E.
早期可出现偏头痛
查看完整题目与答案
【单选题】The national plant of New Zealand is the ______.
A.
Taraxacum
B.
Chrysanthemum
C.
Honeysuckle
D.
Pohutukawa
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【单选题】In 1995 Martin Luther King, Jr. gained national ______ for his nonviolent methods used in a bus boycott in Montgomery.
A.
realization
B.
permission
C.
recognition
D.
revolution
查看完整题目与答案
【单选题】一般情况下,企业提供产品的平均收益若低于以下哪种成本就停止营业( )
A.
平均成本
B.
边际成本
C.
平均不变成本
D.
平均可变成本
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【单选题】S结与S房的关系式错误的是( )。
A.
s房=s结+s底
B.
s房=s底-s结
C.
s房=s底-s心
D.
s房=s结-s底
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【单选题】企业揭示差异和矛盾的财务分析方法是( )。
A.
比较分析法
B.
比例分析法
C.
比率分析法
D.
因素分析法
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【单选题】The experts must have used big data to make the national economies predictable. Without thehelp of big data, the ranking would be ()(不能预言的).
A.
predictable
B.
unpredictable
C.
speakable
D.
unspeakable
查看完整题目与答案
【单选题】Every minute is made good ______ of ______ for the coming national examinations.
A.
used…preparing
B.
use…to prepare
C.
useful…to prepare
D.
use…preparing
查看完整题目与答案
相关题目：
【单选题】It is commonly argued that national defense is a public good. Nevertheless, the weapons used by the U.S. military are produced by private firms. We can conclude that
A.
resources would be used more efficiently if the government produced the weapons.
B.
resources would be used more efficiently if private firms provided national defense.
C.
weapons are rival in consumption and excludable, but national defense is not rival in consumption and not excludable.
D.
national defense is rival in consumption and excludable, but weapons are not rival in consumption and not excludable.
查看完整题目与答案
【单选题】关于小儿呼吸功能特点,以下哪项不正确( )
A.
肺活量小
B.
潮气量小
C.
每分通气量按体表面积计算与成人接近
D.
气体弥散量小
E.
呼吸道阻力小
查看完整题目与答案
【单选题】下列关于鼻咽癌说法哪一项是错误的:( )
A.
60%的病人首发症状为颈淋巴结肿大
B.
好发于咽隐窝及顶前壁
C.
早期出现双侧颈深上群淋巴结肿大
D.
EB病毒血清学检查可帮助诊断
E.
早期可出现偏头痛
查看完整题目与答案
【单选题】The national plant of New Zealand is the ______.
A.
Taraxacum
B.
Chrysanthemum
C.
Honeysuckle
D.
Pohutukawa
查看完整题目与答案
【单选题】In 1995 Martin Luther King, Jr. gained national ______ for his nonviolent methods used in a bus boycott in Montgomery.
A.
realization
B.
permission
C.
recognition
D.
revolution
查看完整题目与答案
【单选题】一般情况下,企业提供产品的平均收益若低于以下哪种成本就停止营业( )
A.
平均成本
B.
边际成本
C.
平均不变成本
D.
平均可变成本
查看完整题目与答案
【单选题】S结与S房的关系式错误的是( )。
A.
s房=s结+s底
B.
s房=s底-s结
C.
s房=s底-s心
D.
s房=s结-s底
查看完整题目与答案
【单选题】企业揭示差异和矛盾的财务分析方法是( )。
A.
比较分析法
B.
比例分析法
C.
比率分析法
D.
因素分析法
查看完整题目与答案
【单选题】The experts must have used big data to make the national economies predictable. Without thehelp of big data, the ranking would be ()(不能预言的).
A.
predictable
B.
unpredictable
C.
speakable
D.
unspeakable
查看完整题目与答案
【单选题】Every minute is made good ______ of ______ for the coming national examinations.
A.
used…preparing
B.
use…to prepare
C.
useful…to prepare
D.
use…preparing
查看完整题目与答案
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