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本题附图所示为冷冻盐水循环系统。盐水密度为 1100kg·m -3 ,循环量为 36m 3 ·h -1 。管路直径相同,盐水由 A 流经两个换热器而至 B 的能量损失为 98.1J·kg -1 , 由 B 流至 A 的能量损失为 49J·kg -1 ,试计算:( 1 )若泵的效率为 70 %时,泵的轴功率为_____ kW 。 ( 2 )若 A 处的压强表读数为 24.52×10 4 Pa 时, B 处的压强表读数为_______ Pa。
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【单选题】Over two thirds of the population were believed to have no ______ to the health care in the west rural area in China.
A.
aid
B.
basis
C.
belief
D.
access
【简答题】（1）（﹣3）+（﹣4）﹣（+11）﹣（﹣9）= _________ （2）（﹣7）×（﹣5）﹣90÷（﹣3）= _________ （3） = _________ （4） = _________
【单选题】施工进度控制工作中事后进度控制的内容包括( ) 。
A.
整理工程进度资料并进行归类和编目
B.
核实已完工工程量，签发应付工程进度款
C.
向业主提供进度报告
D.
审批工程延期
【单选题】____________of the news reports _________written in English on the Internet.
A.
Two thirds, are
B.
Two-thirds, is
C.
Two third, are
D.
Second thirds, is
【单选题】As a result of the policy ______.
A.
two thirds of mayors are now college graduates
B.
over 20% of eligible East German women still have no jobs
C.
two thirds of East German women go out to work
D.
two thirds of East German doctors, judges are men
【单选题】According to the survey, over two-thirds of all teenagers in the UK______.
A.
eat sandwiches for lunch
B.
don't always use soap when washing their hands
C.
eat lunch with their hands
D.
don't always wash their hands after visiting the toilet or before lunch at school
【简答题】施工进度控制工作中事后进度控制的内容包括( )。 A、整理工程进度资料并进行归类和编目 B.核实已完工程量，签发应付工程进度款 C.向业主提供进度报告 D.审核工程延期
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