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【多选题】
用指针式万用表检测二极管时,在R×1kΩ档,用表笔检测二极管的正反向电阻。下面说法正确的是(A.
二极管的正反向电阻差值越大，标明二极管的单向导电性越好
B.
R正≈R反≈0，表示管子已被击穿
C.
R正≈R反≈∞，表示管子内部已断路
D.
在正向导通时，红表笔连接的二极管引脚是正极
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举一反三
【单选题】在计算完工产品成本时,如果不计算在产品成本,必须符合( )条件。
A.
月末在产品数量稳定
B.
月末在产品数量较大
C.
月末在产品数量变化较大
D.
月末在产品数量较小
【简答题】I assumed things had to be better in the____________ than in the city.
【单选题】Speaker a: It’s late. I am afraid I have to leave now. Speaker b:_________________.
A.
Good morning.
B.
Good afternoon.
C.
Good night.
【单选题】一Will the fine weather______－?一I am afraid not．The weatherman says it’s going to rain．A．stay up
A.
34．一Will the fine weather______-? 一I am afraid not．The weatherman says it’s going to rain． A．stay up
B.
keep up
C.
come on
D.
move on
【单选题】The word 'assumed' in the last paragraph means __________. 查看材料
A.
disclosed
B.
setup
C.
took on
D.
changed
【单选题】Is this factory _____ a lot of students visited yesterday?
A.
the one
B.
that
C.
which
D.
/
【简答题】用所给单词(酒店设施)填空 air conditioning ; restaurants; room service; business centre; f itness centre ; swimming pool; wi-fi access ; minibar
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