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【多选题】
College Chinese teachers should own a very complicated academic hierarchicalsystem including______
A.
A educational and curriculum theories
B.
B literary criticism, Chinese literary history, ancient and modern Chinese and foreign literature
C.
CPolitical science, history, philosophy, religion, aesthetics and sociology
D.
D international and national news, including political, cultural and value trends
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参考解析：
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【单选题】Under certain conditions, avalanche breakdown may occur in the p-well to n substrate junction, driving both MOS into saturation. This condition is called latch-up, which can sustain itself by positive...
A.
low current, low voltage
B.
high current, high voltage
C.
low current, high voltage
D.
high current, low voltage
【单选题】Ideally, a change in gate voltage on approximately ______ produces an order of magnitude change in the subthreshold current.
A.
30 mV
B.
40 mV
C.
50 mV
D.
60 mV
【单选题】2 In the process of making Swiss rolls, the protein should reach ( ).
A.
Dry foaming
B.
Neutral foaming
C.
Wet foaming
【多选题】由于移流和扩离散作用的存在,废水排入河流后,在河流中一般依次呈现()、()、()三种不同混合状态的区段。
A.
横向混合河段
B.
纵向混合河段
C.
水平混合河段
D.
垂向混合河段