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【多选题】
关于排水泵站水泵选择的问题,以下叙述中,正确的有( )。A.
作泵选用总的要求是在满足最大排水量的条件下,减少投资,节约电耗,运行安全可靠,维护管理。
B.
可能的条件下,采用同型号水泵为好。这样对设备的购置,设备与配件的备用,安装施工,维护检修。
C.
适应流量的变化和节约电能考虑,采用大小搭配较为合适。
D.
水泵站中,一般选择卧式离心污水泵,当流量大时,可选择轴流泵。
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举一反三
【单选题】Negotiators are due to meet later today to work out a_.
A.
comfort
B.
compromise
C.
correct
D.
cooperate
【简答题】Negotiators are due to meet later today to a compromise.
【单选题】SECTION C NEWS BROADCAST Directions: In this section, you will hear several news items. Listen to them carefully and then answer the questions that follow. 听力原文： Negotiators from China are due to meet...
A.
Chinese products are better than American's.
B.
Chinese products are cheaper than American's.
C.
China does not obey the spirit of free trade.
D.
Chinese products are more competitive than American's.
【单选题】Negotiators are due to meet later today to ________ a compromise.
A.
take out
B.
make out
C.
work out
D.
turn out
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