水泵须分解检修，检修后须作用良好，不漏水。柱塞式手动泵阀体下部须有排水堵。

将8g铁片放入100 mL CuSO₄溶液中，Cu²⁺全部被置换后，取出附有铜的铁片洗涤、干燥、称重，其质量变为8．2g，则原溶液中CuSO₄的物质的量浓度是

A．0.125ol／L

B．0.175mol／L

C．0.25 mol／L

D．0.5 mol／L

GH功能紊乱时，生化诊断的首选实验室检查项目是()

A.血清（浆）GH

B.血清（浆）IGF

C.血清（浆）IGFBP

D.运动刺激试验

E.抑制试验

       你校英语外籍教师Emesto and Stasi暑假期间准备在本地开一家西餐小店，要招若干名高中生为无酬打工人员。下面是招聘启事：

                                                                   Wanted!

                                                     4 middle school students

                                            Do service work and act as translators

                                                         Healthy and helpful

                                                   Contact:wfpub@gmail.com

      假定你叫李华，愿意应聘。请写封电子邮件，介绍自己，并说明你愿意应聘的理由。词数110左右。开头已写好，不计入总词数。

       Dear Emesto and Stasi,

I happened to have read your advertisement and decide to apply for the job.____________                      ___________________________________________________________________

________________________________________________________________________              

       Yours sincerely

                                                                                                                                               Li Hua

区域预测结果、区域防突措施、保护效果检验、采掘工作面编制防突专项设计及安全技术措施，经企业技术负责人审批。

安全装置及设施（）拆除、挪用