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【多选题】
抑制离子注入过程中的沟道效应的措施有()。
A.
偏转注入或倾斜硅片
B.
在衬底表面制作掩膜氧化薄层(非结晶材料),使入射离子进入硅晶体前无序化
C.
提高离子注入的速度
D.
衬底的预非晶化处理(破坏表面结晶层)
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皮皮学刷刷变学霸
举一反三
【单选题】急性下壁心肌梗死的特征性心电图改变出现于
A.
V1、v2、v3导联
B.
v3、v4、v5导联
C.
v5、v6导联
D.
Ⅱ、Ⅲ、aVF导联
E.
I、Ⅱ、aVL导联
【单选题】Which event directly provoked the American Revolution?
A.
No representation of the colonies in the British Parliament
B.
The Boston Tea Party incident
C.
New taxes imposed by Britain on the colonies
D.
The France-Britain War
【单选题】超声断层图像分析是由浅入深按解剖层次进行的,腹部超声应包括 ( )
A.
皮肤及皮下组织
B.
肌肉组织(腹壁组织)
C.
腹膜腔
D.
腹部内脏结构
E.
以上都有
【判断题】An agenda is a list of topics, which should be distributed only to the chairman of the meeting.
A.
正确
B.
错误
【判断题】In the event of a major tube failure of fire tube boiler, high-pressure water can be forced directly into the furnace area, rapidly creating large quantities of steam, which have the potential for ...
A.
正确
B.
错误
【单选题】有下面代码:  int  a1=10,b1=12; b1+=a1;则b1的值为(   )
A.
12
B.
10
C.
13
D.
22
【单选题】代码块如下: int a1=10,b1=12; b1+=a1;则b1的值为( )
A.
12
B.
10
C.
22
D.
13
【判断题】染料敏化太阳电池比硅基太阳电池的光电转化效率要高。
A.
正确
B.
错误
【单选题】Which real-life event is almost directly represented in the novel?
A.
The Banana Massacre of 1928
B.
The Venezuelan coup d’état of 1958
C.
The Thousand Days' War
D.
The bogotazo
【判断题】Agenda is a list of the subjects to be dealt with or talked about at a meeting.
A.
正确
B.
错误
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