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【多选题】
下面关于集中CVD方法描述正确的是()。 C. 做CVD淀积钨时,采用六氟化钨WF6作为气体源,六氟化钨能
与衬底窗口处的硅反应,而不与二氧化硅、氮化硅反应,
所以钨可以选择性地沉积在硅接触窗口中。
A.
等离子体增强化学气相淀积(PECVD)是目前最主要的化学气相淀积系统,低温淀积是其最主要优点。
B.
低压化学气相淀积系统(LPCVD)淀积的某些薄膜,在均匀性和台阶覆盖等方面比APCVD系统的要好,而且污染也少。
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举一反三
【单选题】There are about three million Muslims in England today, and it has been the fastest-growing religion in the country so far this century. If something isn't done soon, the English are all going to be f...
A.
hasty generalization/generalizing from exceptional cases
B.
accident
C.
weak analogy
D.
fallacious appeal to authority
E.
fallacious appeal to popularity
F.
post hoc, ergo propter hoc/cum hoc, ergo propter hoc
G.
overlooking the possibility of random variation or regression
H.
slippery slope
I.
untestable explanation
【简答题】请根据课本介绍,简要叙述时序逻辑电路是什么?
【单选题】根据《刑法》319条的规定,犯骗取出境证件罪的,情节严重的,判处( )有期徒刑。
A.
三年以上五年以下
B.
五年以上十年以下
C.
三年以上十年以下
D.
五年以上十五年以下
【简答题】Something growing in her brain caused damage to her ______ nerve, and doctors thought she would never see again.(lubricate, mediator, twinkle, outpost, traverse, emancipate, alien, optic, deductive, s...
【简答题】Something growing in her brain caused damage to her ______ (optic )nerve, and doctors thought she would never see again.
【简答题】Something growing in her brain caused damage to her ________ nerve, and doctors thought she could never see again.A. opposite B. optional C. optic D. optimistic
【简答题】Give to and receive from one another 2.no longer active in work or profession 3.communication by exchange of letters 4.overcome completely in mind or feeling 5.be in control 6.without stopping 7.comin...
【简答题】假设x,y,z,t均为整型变量,则执行以下语句后t的值是__________。x=y=z=1; t=!x || y && (--z);
【单选题】when we describe something as living or growing in, on, or near the water. it is__________.
A.
transpiration
B.
aquatic
C.
resistance
D.
infiltration
【单选题】Something growing in her brain caused damage to her ________ nerve, and doctors thought she would never see again.
A.
optic
B.
sovereign
C.
deductive
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