能产生激光的固体材料都是由（）和（）两部分组成。实际上掺杂离_爱下问搜题

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问题填空题

能产生激光的固体材料都是由（）和（）两部分组成。实际上掺杂离子就是（）.

答案

参考答案：基质晶体；激活离子；激活离子

单项选择题

下列关于干姜的药理作用错误的是（）

A.提高耐缺氧能力

B.抗溃疡

C.镇吐

D.抗炎镇痛

E.镇咳平喘

单项选择题

97．Because Web servers are platform and application (1) , they can send or request data from legacy or external applications including databases. All replies, once converted into (2) mark-up language, can then be transmitted to a (3) . Used in this way, Intranets can (4) lower desktop support costs, easy links with legacy applications and databases and, (5) all, ease of use.

(1)

A．pressed

B．compressed

C．compress

D．press