我国已明确规定SI制为法定计量单位，SI制中酶活力单位是（） A.g／L B.mmo

根据短文内容，从短文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。

Choosing the right job is probably one of the most important decisions we have to make in life, and it is frequently one of the hardest decisions we have to make. One important question that you might ask yourself is: “How do I get a good job?”    小题1:   .

There are people who can answer an insignificant advertisement in the local paper and land the best job in the world; others write to all sorts of places all over the country, and never seem to get a reply at all. Still others believe that the in person, door-to-door approach is by far the best way to get a job; and then there are those who, through no active decision of their own, just seem to be in the right place at the right time.   小题2:   . He used to spend a lot of his free time down by the sea watching the tall ships, but never thinking that he might one day sail one of them. His father was a farmer, and being a sailor could never be anything for the boy but an idle dream. One day, on his usual wandering, he heard the captain of the ship complaining that he could not sail because one member of his crew was sick. Without stopping to think, the lad（少年）offered to take his place.    小题3:   .

   小题4:   . If the lad had gone home to consider about his decision for a week, he may have missed his chance. It is one thing to be offered an opportunity; it is another thing to take it and use it well.

Sometimes we hear stories about people who break all the rules and still seem to land plum jobs（美差）. When you go for a job interview or fill out an application, you are expected to say nice things about the company to which you are applying.     小题5:  . And within a year this person had become general manger of the company.

A．This story also illustrates the importance of seizing an opportunity when it presents itself.

B．People find jobs in an infinite number of ways.

C．it’s almost impossible to find a good job by answering advertisement in newspapers

D．Take for example the young man who wanted to be a sailor.E. But there was one person who landed an excellent job by telling the interviewer all the company’s faults.

F. He spent the rest of his life happily sailing the ships he had always loved.

G. It is very important to seize an opportunity when it presents itself.

按《铁路技术管理规程》附件的编号，调度命令登记簿是（）。

A、附件4

B、附件5

C、附件6

D、附件7

型号DLG-700×1250的平带鼓式硫化机的规格数据？

男，5岁，上颌乳中切牙邻接面浅龋，拟用氟化物进行浅龋治疗，其主要作用机制是

A．与牙面细菌蛋白结合，杀灭细菌
B．与釉质的羟磷灰石作用，生成氟磷灰石
C．凝固有机质塞牙本质小管
D．中和致龋菌所产生的酸
E．刺激修复性牙本质形成

计量员对计量器具按（）或计量器具出厂编号统一编号建立《计量器具台帐》。