按照《中华人民共和国环境噪声污染防治法》第二条规定：本法所称环境噪声，是指在( )

I _____________ good food in Dalian last holiday. [ ]

A. eat

B. eats

C. ate

期权的时间价值乃至期权价格都将随标的物价格波动的增大而提高，随标的物价格波动的缩小而降低。（）

估计下列溶液中溶质的质量分数最大的是：

A．4.6gNa投入45.4g水中

B．7.8gNa₂O₂投入42.2g的水中

C．6.2gNa₂O投入43.8g的水中

D．8gNaOH投入42g水中

In (85) software, one question of near-universal interest is how rapidly Windows NT, which began shipping last summer, will be (86) in the marketplace and for what uses. For the most part, observers are (87) about the operating system’s long term prospects, but expect it to remain on (88) rather than desktops during 1994, saying that it won’t become a mainstream product until (89) PCs typically have 16 to 24 MB of RAM, which is unlikely to happen next year.

（88）是（）

A.applications

B.accepted

C.clients

D.enthusiastic

E.servers

F.desktop

G.systems

H.replaced

如何对VG3变频器（VVVF）进行验证电机风机是否正常的操作？