耙斗形式按耙齿分有（）与（）耙斗。

被称为“地球之肺”的森林正以每年15000000上消失．这个数据用科学记数法表示为______．

（）可以成为考察工资差别的对象。

A.不同职业劳动者之间的工资差别

B.不同地区之间的工资差别

C.不同年龄和性别劳动者之间的工资差别

D.不同工资项目之间的工资差别

E.不同国家之间的工资差别

Information is no good to you if you can’t （） it．The loction dimension of information means having access to information no matter where you are．Ideally, in other words，your location or the information’s location should not matter．You should be able toaccess information in a hotel room，at home，in the student center of your campus，at work，onthe spur of the moment while walking down the street，or even while traveling on an airplane．This location dimension is closely related to （）and wireless computing (and also ubiquitous computing)．

To keep certain information private and secure while providing remote access for employees，many businesses are creating intranets．An intranet is an （） organizational internet that is guarded against outside access by a special （） feature called a firewall (which can be software，hardware，or a combination of the two)．So，if your organization has an intranet and you want to access information on it while away from the office，all you need is Web access and the password that will allow you （） the firewall．

Information is no good to you if you can’t （） it．

A．access

B．make

C．learn

D．bring

承担燃气钢质管道、设备焊接的人员，不能上岗的条件是（）。

A.具有锅炉压力容器、压力管道特种设备操作人员资格证(焊接)焊工合格证书

B.焊接范围在证书注明的合格范围内

C.证书在有效期内

D.间断焊接时间超过6个月

特种设备（）项目计划，应报公司安全保卫部审批，经批准后方可实施。

A.新增，

B.更新，

C.大修，

D.改造