题目内容

Which of the following is the main topic of the passage？

A. Scientists and their curiosity.
B. Science and scientific method.
C. Understandings of science.
D. Misunderstandings of science.

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某供应商关系模式为：
Providler(PID，Pname，Tel，GoodsID，GoodsClas-sID, GoodsName，GoodsPrice)
该关系模式应满足以下函数依赖：
PID→Pname，PID→TEL，GoodsID→GoodsClassID，GoodsID→GoodsName，GoodsName→GoodsPrice
则这个关系模式的主码为______。

A. (PID，GoodsName)
B. (PID，GoodsClassID)
C. (PID，GoodsI)
D. (PID，GoodsPric)

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Basically the author's opinion of Washington is______.

A. praiseful
B. derogatory
C. critical
D. negative

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下列关于无形资产残值的确定，表述不正确的是()。

A. 估计无形资产的残值应以资产处置时的可收回金额为基础确定
B. 残值确定以后，在持有无形资产的期间内，至少应于每年年末进行复核
C. 使用寿命有限的无形资产一定无残值
D. 无形资产的残值重新估计以后高于其账面价值的，无形资产不再摊销，直至残值降至低于账面价值时再恢复摊销

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The fundamental rule of the sea means that______.

A. the sea should be equally divided among all the nations in the world
B. any area of the sea belongs to the nation closest to it
C. no nation has any sea rights
D. no nation has exclusive right to the open sea

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Which of the following is the main topic of the passage？

A. Scientists and their curiosity. B. Science and scientific method. C. Understandings of science. D. Misunderstandings of science.

某供应商关系模式为：Providler(PID，Pname，Tel，GoodsID，GoodsClas-sID, GoodsName，GoodsPrice)该关系模式应满足以下函数依赖：PID→Pname，PID→TEL，GoodsID→GoodsClassID，GoodsID→GoodsName，GoodsName→GoodsPrice则这个关系模式的主码为______。

Basically the author's opinion of Washington is______.

下列关于无形资产残值的确定，表述不正确的是()。

The fundamental rule of the sea means that______.

A. Scientists and their curiosity.
B. Science and scientific method.
C. Understandings of science.
D. Misunderstandings of science.

某供应商关系模式为：
Providler(PID，Pname，Tel，GoodsID，GoodsClas-sID, GoodsName，GoodsPrice)
该关系模式应满足以下函数依赖：
PID→Pname，PID→TEL，GoodsID→GoodsClassID，GoodsID→GoodsName，GoodsName→GoodsPrice
则这个关系模式的主码为______。