【单选题】Which of the following best describes a transistor?
A.
a cable that transmits bits by means of light pulses along a glass or plastic fiber instead of electrical signals over a conductor
B.
an electronic device that can accept, manipulate, store, and output data, and whose instructions can be programmed
C.
an older information system that remains in use because it still functions and is costly to replace
D.
a small electrical circuit made from a semiconductor material such as silicon
【多选题】【英译汉】Words and its explanations match. Fill in each blank with only letter from A toM. ( 注意填写答案时,答案前后一定不要留空格或符号)
J.
perpendicular K.threshold L.schematic M.disappear (1)跨导——( ) (2)硅——( ) (3)同时的——( ) (4)极限,门槛 ——( ) (5)趋于零地 ——( ) (6)优先选择的——( ) (7)扼要的,图解的 ——( ) (8)垂直线,垂直的位置——( ) (9)离子化,电离 ——( ) (10)重叠(安装,添加) ——( )
【单选题】What's the mark of third generation of computer?
D.
Very large scale of integrated circuit
【单选题】以下西餐的座次礼仪中,哪一点是与中餐不同的?
【单选题】Bobby: Where's the food I ordered? I've waited for thirty minutes! Waiter: I'm really sorry, but the kitchen is very busy. You'll have it _______. [ ]
【单选题】One of the great revolutions of all time that occurred in 1948 was ______.
A.
the invention of a transistor
B.
the discovery of silicon
C.
the production of a crystal called a diode working like a valve
D.
the beginning of the start of microelectronics
【多选题】(), () and( ) are electronic components.
【单选题】Which electronic component is this graphical symbol illustrating?
D.
Silicon controlled rectifier.
【多选题】()、()、()are electronic components