绝对压强Pabs、相对压强P和真空压强Pv与当地大气压强Pa的关系是()。 A.Pa

题型:单项选择题

问题:

绝对压强Pabs、相对压强P和真空压强Pv与当地大气压强Pa的关系是()。

A.Pabs=P+Pv

B.p=pabs+pa

C.Pv=pa-pabs

D.Pa=Pabs+p

考点:注册环保工程师环保工程(流体力学)环保工程(流体力学)题库
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After________series of unsuccessful attempts,he has finally passed________driving test.[      ]

A./;the  

B.a;the

C.the;a

D./;a

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男,35岁。3周前突患肩臂疼痛,伴有麻木不仁、活动受限、受凉则痛势加重。西医诊断为“颈椎病”。舌淡苔白,脉沉细少力。最佳选药是()。

A.独活

B.桑寄生

C.羌活

D.秦艽

E.威灵仙

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语法填空

阅读下面短文. 按照句子结构的语法性和上下文连贯的要求. 在空格处填入一个适当的词或使用括号中词语的正确形式填空.

     China reported its __1__(one)HIV/AIDS positive case in 1985.As of October 31,319,877 HIV

positive cases __2__(record)in China. Health Minister Chen Zhu announced on November 24.

But according to Chen. it is estimated that the actual number of HIV/AIDS positive people in China will

be 740,000 __3__the end of this year.The number in 2007 was 700,000.

"The exact number of infections(感染)keeps rising... but at a lower speed __4__(compare)with previous

years. "said Chen.

Almost 60 million people worldwide have been infected by the HIV virus __5__it was first recorded in

1981. according to __6__UNAIDS report released(发布)on November 24.

HIV/AIDS has killed 25 million people in the world __7__new infections are slowing sharply due to

__8__(prevent)programs.

HIV/AIDS can be transmitted(传播)through sexual contact. or by sharing needles with an HIVpositive

drug user. or from an HIVpositive woman to __9__child before or during birth or through breastfeeding(母乳喂养)__10__birth.HIV also can be transmitted through receipt(接受)of infected blood.

题型:单项选择题

艾滋病的病原体是

A.HIV

B.HCV

C.HPV

D.HBV

题型:单项选择题

经甲公司申请,市建设局给其颁发建设工程规划许可证。后该局在复核中发现甲公司在申请时报送的企业法人营业执照已经超过有效期,遂依据《行政许可法》规定,撤销该公司的规划许可证,并予以注销。甲公司不服,向法院提起诉讼。市建设局撤销甲公司规划许可证的行为属于下列哪一类别?()

A、行政处罚

B、行政强制措施

C、行政行为的撤销

D、行政检查

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