【判断题】LED数码管内部发光二极管的接法有两种:共阳极接法和共阴极接法。
【简答题】Anger is a kind of feeling. Many things can make you angry. When your teacher gives you too much homework, when your team loses an important , when a friend borrows your favorite thing and then br...
【单选题】Which of the following is NOT an advantage of vacation rentals?
A.
They make you feel at home.
B.
They spice up special occasions.
C.
They are convenient and easy to book.
D.
They provide amenities at a standard fare.
【单选题】-What do you think of store shopping in the future? -Personally, I think it will exist along with home shopping but ______.
C.
will never be replaced
D.
would never be replaced
【判断题】半导体数码管按内部发光二极管的接法不同,可分为共阴和共阳两种
【单选题】--- In what way will you use your portable computer? --- I’ll use it _____ for giving lectures at home and abroad.
【单选题】关于内力与应力的关系中,说法正确的是()