【单选题】有 A 和 B 两种单质晶体,我们知道 A 的晶格常数是 4Å ,带隙是 1.2eV , B 的晶格常数是 5Å ,其带隙有可能是 _ __ _ _eV 。
【单选题】有 A 和 B 两种单质晶体,我们知道 A 的晶格常数是 4Å ,带隙是 1.2eV , B 的晶格常数是 5Å ,其带隙有可能是 _____eV 。
【单选题】下列关于基因的概念错误的是(
D.
基因是控制生物性状的遗传物质的结构和功能单位
【单选题】The monopoly-capitalist group annexed many smaller enterprises last year.
【单选题】The latest court ruling was from the ______.
B.
Ninth Circuit Court of Appeals
【单选题】What did the court think of the EPA's excuses for its inaction?
A.
The court denied the EPA's excuses as sufficient for its inaction.
B.
It remained undecided whether the court accepted the excuses.
C.
The court thought the excuses are similar to that of coal-fired power plants.
D.
The court will examine the EPA's excuses further.