窝沟点隙封闭剂分为()、()。
参考答案:自凝固化型;可见光固化型
________ I saw the beautifuldecorated house, I really wondered how she could manage that all by herself.
A.While
B.When
C.As long as
D.Now that
I/O接口根据CPU发来不同的()来区别信息的性质,将信息存入相应的寄存器中.
A、数据信号
B、地址信号
C、状态信号
D、控制信号