钢丝绳牵引带式输送机用的胶带宽度是指()的宽度
A、胶带全宽;
B、耳槽宽度;
C、刚条宽度
参考答案:B
磁带记录仪快录慢放将使重放信号的频带()。
—I’m a little nervous to give an English speech this afternoon.
—Come on ! Believe in ________ and you can do it.
A.myself
B.yourself
C. himself
D.herself