在慢性阻塞性肺疾病所致的慢性Ⅱ型呼吸衰竭息性加重时，可以进行无创机械通气的适应证包括

高位性肠梗阻（）。

A．呼吸性酸中毒

B．代谢性碱中毒

C．呼吸性碱中毒

D．代谢性酸中毒

E．呼吸性酸中毒合并代谢性碱中毒

Extreme Programming(XP)is a discipline of software development with (71) of simplicity, communication，feedback and courage．Successful software development is a team effort-not just the development team，but the larger team consisting of customer, management and developers．XP is a simple process that brings these people together and helps them to succeed together．XP is aimed primarily at object-oriented projects using teams of a dozen or fewer programmers in one location．The principles of XP apply to any (72) project that needs to deliver quality software rapidly and flexibly． An XP project needs a (73) customer to provide guidance．Customers，programmers, managers，are all working (74) to build the system that’s needed．Customers-those who have software that needs to be developed-will learn simple, effective ways to (75) what they need，to be sure that they are getting what they need，and to steer the project to success.

74（）

A．together

B．by themselves

C．separately

D．alone

以下有关数组定义的语句序列中，错误的是______。

A．Static arr1(3) Arr1(1)=100 arr1(2)="Hello" arr1(3)=123.45

B．Dim arr2()As Integer Dim size As Integer Private Sub Command2_Click() size=InputBox("输入:") ReDimarr2(siz ...... End Sub

C．Option Base 1 Private Sub Command3_Click() Dim arr3(3)As Integer ...... End Sub

D．Dim n As Integer Private Sub Command4_Click() Dim arr4(As Integer ...... End Sub

脉动阻尼器主要用来减少油压的（），降低（）。

A、波动；噪音

B、波动；渗漏

C、波动；压力

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