【单选题】【消耗次数：1】
美国人赫尔曼?霍勒瑞斯受到提花织机的启发，想到用（ ）来表示数据，制造出了制表机并获得了专利。
①
晶体管
②
穿孔卡片
③
电子管
④
继电器
参考答案：
复制
纠错
➡️如需代学继续教育，联系微信：yizhituziang
相关题目
【简答题】
晶体管控制无触点电子点火系可[填空]初级电流.从而提高次级电压.
随机题目
【单选题】
I saw that she was in difficulty with all those parcels, so I offered my_____.
①
service
②
money
③
use
④
chance
【单选题】
The electric fan has blown away the terrible smell in the hall, ______?
①
cant it
②
isnt it
③
hasnt it
④
doesnt it
【单选题】
The workers are busy ____models for the exhibition.
①
to make
②
with making
③
being making
④
making
【单选题】
Every morning Mr. Smith takes a ______to his office.
①
20 minutes walk
②
20 minutes walk
③
20-minutes walk
④
20-minute walk
【单选题】
The boy is not happy at the new school. He has ________ friends there.
①
few
②
a few
③
little
④
a little
【单选题】
We were all surprised when he made it clear that he _____________office soon.
①
leaves
②
would leave
③
left
④
had left
【单选题】
I fell and hurt myself while I ________ basketball yesterday.
①
was playing
②
am playing
③
play
④
played
【单选题】
When father was young, he ______from morning till night.
①
was made work
②
was made working
③
made to work
④
was made to work