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【单选题】
所谓"解剖牙冠"的论述,下列哪个观点是正确的( )。A.
显露于口腔的部分
B.
牙体发挥咀嚼功能的部分
C.
牙龈缘以上的部分
D.
牙釉质覆盖的部分
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Under which of the following conditions would the interdiction of illegal drugs result in a decrease in the quantity of drugs sold and in a decrease in total spending on illegal drugs by drug users?
A.
The interdiction has the effect of shifting the demand curve for illegal drugs to the right.
B.
The price elasticity of demand for illegal drugs is 1.3.
C.
The price elasticity of supply for illegal drugs is 0.8.
D.
As a result of the interdiction, the price of illegal drugs increases by 20 percent and the quantity of illegal drugs sold decreases by 16 percent.
【单选题】“玉兔”号月球车用 Pu作为热源材料。下列关于 Pu的说法正确的是
A.
Pu与 U互为同位素
B.
Pu与 Pu互为同素异形体
C.
Pu与 U具有完全相同的化学性质
D.
Pu与 Pu具有相同的最外层电子数
【简答题】What does illegal contract mean?
【简答题】非法谈判项目(illegal bargaining items)
【简答题】The consequences of illegal excavation are______.
【单选题】目前微机配置的光盘驱动器大多数是 DVD ,与之对应的光盘存储容量可以达到( )
A.
650 ～ 700MB
B.
1 ～ 2GB
C.
4 ～ 5GB
D.
6 ～ 9GB
【单选题】It is not illegal to use them ______ they are a prescription drug; it is only illegal to transfer them to somebody else．
A.
for
B.
why
C.
because
D.
that
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