磨光机具、切割机具多在潮湿环境或有水环境中操作，此时应选用（）机具。A、单绝缘 B、

缺词填空(10分)

Think about two people you know. How would you describe their personalities? Are they the s    ?Of course not! Everyone is different .Even twins have d       personalities.

Some people are very outgoing and f       .They like to be w      other people all the time. And some people are quiet, maybe even shy. They like to be alone or play with a f      friends.

Some people worry a lot. They may w      about many things. H       ,some people don’t worry about anything! They n       mind what is going on next. These people are very relaxed.

Some people are h       .They always do their best. They aren’t lazy. They always get more chances to have success.

And don’t f       this: Everyone is different.

That means you are special.

如图所示，为A、B、C三种物质的溶解度曲线。

（1）M点表示              ；N点表示               。

（2）在t₁℃时，三种物质的溶解度由小到大的排列顺序是                        。

（3）在t₃℃时，用等质量的水配制的三种物质的饱和溶液，若降温到t₁℃时，有晶体析出的是             ，析出晶体较多的是                 。

（4）当A物质的溶液接近饱和时，采用以下三种方法均可使其变为饱和溶液：

①                             

②                             

③                             

制氢室门口，院内应悬挂“严禁烟火”和非工作人员禁止入内警告牌。

银行业金融机构授信业务的内部控制要素主要包括（）

A.统一授信管理

B.客户评价体系

C.授信岗位职责

D.授信调查审批

E.授信风险管理

在车床上用靠板靠模法车成形面，实际上与靠模车圆锥的方法基本上相同。( )