室外给水管道的覆土深度,应根据土壤冰冻深度、车辆荷载、管道材质及管道交叉等因素确定。

题型:单项选择题

问题:

室外给水管道的覆土深度,应根据土壤冰冻深度、车辆荷载、管道材质及管道交叉等因素确定。金属管道覆土深度不宜小于()m。

A、0.5

B、0.7

C、1

D、1.2

考点:注册设备工程师(给水排水)注册设备工程师(给水排水)题库
题型:单项选择题

设有如下程序: Private Sub Command1_Click()Dim sum As Double,x As Doublesum=0n=0For i=1 To 5 x=n/i n=n+1 sum=sum+xNext End Sub 该程序通过For循环计算一个表达式的值,这个表达式是 ______。

A.1+1/2+2/3/4+4/5

B.1+1/2+2/3+3/4

C.1/2+2/3+3/4+4/5

D.1+1/2+1/3+1/4+1/5

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Americans’ (1) impulses keep generating surprises. Charitable giving plays an even larger role in the (2) . Demand for nonprofit services gets proportionately bigger as a locality’s (3) rises. The philanthropy of the wealthy may not hinge on tax (4) to the degree many believe. The US (5) the world in levels of charitable activity. Some experts see charity as a (6) trait of the US, more than (7) or business. But those forces may be (8) , as many nonprofits, from healthcare to classical music are selling (9) in a marketplace alongside for-profit (10) . Charity is no mere (11) activity. It pays off for society in ways that may (12) the rates of return on many traditional investments. Charity not only helps those on the (13) end but also strengthens the (14) of society at large. Moreover, it appears to make the givers themselves more (15) . The pattern that conservatives are better givers than (16) is less about politics than about charity-linked (17) most common to conservatives, religious commitment, marriage and children, and entrepreneurship. The main point is that more Americans, regardless of ideology, embrace giving as a tool for (18) . The urge to make a difference, and to take (19) in it, outweighs (20) considerations.

题型:单项选择题

换热器按原理分为三类:()、()、()。

题型:单项选择题

某公司欲开发一门户网站,将公司的各个分公司及办事处信息进行整合。现决定采用Composite设计模式来实现公司的组织结构关系,并设计了如下图所示的UML类图。图中与Composite模式中的“Component”角色相对应的类是(1),与“Composite”角色相对应的类是(2)。

空白(2)处应选择()

A.Company

B.FinanceDepartment

C.HRDepartment

D.ConcreteCompany

题型:单项选择题

持续稳定高速的经济增长状态下,证券市场会呈()趋势。

A.上升

B.下跌

C.不变

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