（）是指一个国家所处的地理位置和自然状况，包括地形、地貌、气候、土壤、水系、矿藏甚至

情景交际。

     根据对话内容，从对话后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

— He is very good, isn't he? 

—    1  

— I said the singer was great. 

—    2   

— Have you seen him here before?

—   3   I think he probably writes the music and words because I've never heard any of the songs before.

— It's not fair. 

—   4    

— People with musical ability like that having to stand around here to make a living.

— Perhaps he enjoys it or makes more money than you think.

—   5    

A. What do you mean?

B. Sorry,what did you say?

C. I hope so.

D. Do you like popular music?

E. Be quiet, listen to him

F. Yes, and interesting to watch

G. Oh, yes, He's always at exactly the same place on Saturdays when I come into town.

在“测定金属导体的电阻率”的实验中，待测金属丝的电阻Rx约为5 Ω.实验室备有下列实验器材：

A．电压表V₁(量程0～3 V，内阻约为15 kΩ)

B．电压表V₂(量程0～15 V，内阻约为75 kΩ)

C．电流表A₁(量程0～3 A，内阻约为0.2 Ω)

D．电流表A₂(量程0～0.6 A，内阻约为11 Ω)

E．变阻器R₁(0～100 Ω，0.6 A)

F．变阻器R₂(0～2000 Ω，0.1 A)

G．电池组E(电动势为3 V，内阻约为0.3 Ω)

H．开关S，导线若干

小题1:为提高实验精确度，减小实验误差，应选用的实验器材有________．

小题2:若用毫米刻度尺测得金属丝长度为60.00 cm，用螺旋测微器测得金属丝的直径及两电表的示数如图所示，则金属丝的直径为________mm，电阻值为________Ω.

患者张某，男，45岁。诊断为胰腺癌，现症见胸脘痞闷，腹部隐痛，身目俱黄，恶心呕吐，口干不欲饮，大便溏，舌质淡，苔白腻，脉沉细。方选（）

A.茵陈蒿汤

B.茵陈五苓散

C.膈下逐瘀汤

D.失笑散

E.十全大补汤

为什么要进行电缆的核相？

设备维护工作分为日常维护和定期维护，下列工作属于日常维护的是（）。

A.拆卸发动力机

B.班前按规定加油润滑

C.检查调整各部分的配合间隙

D.调整电气线路及装置