搜题请搜索小程序“爱下问搜题”
问题 单项选择题

补碳压缩机的型号4D300-3P其中的4和3是指（）。

A、4级压缩，3曲柄机器

B、3级压缩，4曲柄机器

C、4级压缩，3缸工作

D、3级压缩，4缸工作

答案

参考答案：B

问答题

Once you’ve written down all your goals, both large and small, the next step on your journey to success is to activate the creative powers of your subconscious mind by reviewing your list two or three times every day. Take time to read your list of goals. Read the list one goal at a time. Close your eyes and picture each goal as if it were already accomplished. Take a few more seconds to feel what you would feel if you had already accomplished each goal.
查看答案
问答题

2003年6月10日，三峡工程成功达到初期蓄水目标，展现了“高峡出平湖”的壮丽景观．当蓄水水位达到海拔135m 高度时，求水面下50m处的大坝受到湖水的压强是多少？
查看答案