井下局部通风机,其噪声不应超过()。
参考答案:85dB
I________ an important conference at 10 o’clock this Sunday morning.
A.will have attended
B.will be attending
C.have been attending
D.have attended
My mother opened drawer to _____ the knives and spoons. [ ]
A. put away
B. put up
C. put on
D. put together