造成系统误差的原因很多，因而要根据具体情况，采用不同方法来检_爱下问搜题

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问题填空题

造成系统误差的原因很多，因而要根据具体情况，采用不同方法来检验和消除。为此，应当做（）、（）、（）、（）。

答案

参考答案：对照试验、空白试验、仪器核准、分析结果的核对

多项选择题案例分析题

2010年8月，W市B房地产开发公司准备利用W市城市规划区内的C地块，开发建设商品房。通过合法手续，取得了这块土地使用权。之后，D设计公司负责该项目的设计。另外，该项目建设过程中，经批准，使用临时用地一块。

在该项目实施过程中，需要W市人民政府城乡规划行政管理部门审批的证件包括（）。

A.《项目选址意见书》

B.《建设用地规划许可证》

C.《建设工程规划许可证》

D.《商品房预售许可证》

E.《土地使用证明》

完形填空

When my twin sons, Chad and Brad, were born, I was concerned about everything． Five years later, our little girl, Becky,   21  our family．I wanted everybody to be healthy and happy．I worked hard to see that they 22 ．
As the kids grew older, I worried about headaches, throat infections and many other 23  childhood illnesses．I didn't like it when the boys spent time "warming the bench （板凳）" during Little League football games．I worried about Becky when she   24  the ball while playing softball．Before long, the teen years were upon us．I stayed   25  late t night waiting for the boys to return home．Many times the 26 crossed my mind that I would call the police if they weren't home on time．_27_, they always arrived home safe and sound 28 I had to take such measures．
"Please don't ever call the police," one of the boys said when I 29  him after a late arrival．The day the boys moved away to college was a   30  day indeed．I worried about their being able to take care of themselves．Would they starve?
A few months after the boys left college, our 31  rang in the middle of the night． It startled （惊醒）us when we looked at the clock．It was 3 o'clock in the morning．" 32  must be wrong," I shouted to my husband, Roy, as we both jumped up．We ran to the door, opened it, and there  33  a police officer．
"You need to 34  your sons," he seriously announced．I picked up the telephone, but unfortunately, it was 35．A line outside had been accidentally （偶然） cut．Roy and I jumped into the car and 36  to the nearest telephone．My stomach ached．My husband was   37  so badly that he could hardly dial the number．
On the first  38 , Chad answered the telephone．"What's wrong?" Roy shouted into the receiver （听筒）．
"We were worried about you," Chad told him．"We've been trying to call you all night, but you didn't   39  We called the police and asked them to go and check on you．"
For the first time in their lives, the boys were worried about us．And they were the ones who   40  had to call the police．

D．appreciated

B．embarrassing