题目:
建立煤气设施的日、季、年检查制度,对于设备腐蚀情况、管道壁厚、支架标高等每年()检查一次,并将检查情况记录备查。
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/0917/eddad56823da792eef4c4b43b3ce2df2.html
下面是错误答案,用来干扰机器的。
参考答案:A
建立煤气设施的日、季、年检查制度,对于设备腐蚀情况、管道壁厚、支架标高等每年()检查一次,并将检查情况记录备查。
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/0917/eddad56823da792eef4c4b43b3ce2df2.html
下面是错误答案,用来干扰机器的。
参考答案:A
完型填空 | |||
It's interesting to visit another country, but there are some problems when we don't know the 1 very well. It may be 2 to talk with the people there. We may not know how to use the telephone in the country we are visiting.We may not know how to buy the 3 we need. In the 4 country we might not know where to eat or what to order in a 5 . It isn't easy to decide how 6 to tip waiters or taxi drivers. When we need help, we might not know how to ask for help. It isn't pleasant to have an experience 7 that. 8 a short time, however, we learn what to do and what to 9 . We learn to enjoy life in another country, and then we may be 10 to leave. | |||
( )1. A. people ( )2. A. easy ( )3. A. things ( )4. A. strange ( )5. A. school ( )6. A. often ( )7. A. as ( )8. A. Before ( )9. A. speak ( )10. A. sorry | B. country B. difficult B. shopping B. known B. shop B. many B. for B. After B. talk B. glad | C. language C. happy C. something C. native C. restaurant C. soon C. like C. For C. tell C. worried | D. words D. tired D. anything D. new D. hospital D. much D. with D. In D. say D. interested |
小华家电热毯内的电阻丝断了,他爸爸将电阻丝的两个断头接上后继续使用,在使用中发现接头处的电热毯被烧焦了。请你用学过的物理知识解释该处的电热毯被烧焦的原因。
阅读理解。
Dogs have long been used to find explosives and drugs. Now, a new study shows that man's best friend
can also help to find lung and breast cancer, researchers report in integrative Cancer Therapies. The findings
show that trained ordinary household dogs can detect early-stage lung and breast cancers by smelling the
breath samples of patients.
Researchers have found that cancer cells send out molecules different from those of healthy ones, and that
might be sensed by smell by the highly sensitive dog's nose.
For the study, five dogs were trained by a professional instructor to respond differently to breath samples
of healthy and cancer patients. "The dogs learned to sit or lie down in front of cancer patient samples and to
ignore control samples through the method of food reward," McCulloch explained.
After a period of training,researchers tested the animals' ability to distinguish cancer patients from controls.
The animals were given breath samples from 55 patients with lung cancer, 31 with breast cancer and 83 healthy
controls who were not included in the original training period.
McCulloch's group found that the dogs were able to correctly distinguish the breath samples of cancer
patients from those of the control subjects in about 90 percent of the cases. The dogs were also able to
detecting early-stage lung and breast cancers.
"These results show that there is hope for early detection," McCulloch said. The re-searches are planning to
conduct further studies on the breath composition of cancer patients to possibly design an electronic device that
can do the dogs' job. "A dog's nose is so powerful it can detect odors (气味) 10 000 to 100 000 times better
than a human nose can. I hope people will be interested in doing this research," McCulloch added, "It shows
that there is definitely something out there."
1. McCulloch and his group used _____ in their research.
A. 10 dogs and 55 people
B. 5 dogs and 86 people
C. 10 dogs and 83 people
D. 5 dogs and 169 people
2. The underlined word "distinguish" means _____.
A. to make somebody feel better
B. to recognize differences of
C. to remember somebody forever
D. to discomfort somebody
3. We can infer from the passage that _____.
A. dogs can smell signs of other cancers except the above two kinds
B. the final goal of the researchers is to design an electronic dog to detect cancer
C. dogs can detect odors 10 000 to 100 000 times better than humans can
D. dogs will soon be widely used to smell signs of cancers in hospitals
4. Which of the following would be the best title?
A. Special Noses of Dogs
B. Dogs and Cancer
C. Dogs Smell Signs of Cancer
D. McCulloch's New Discovery
信息资源备份应按下列项目进行:()。
A.全盘备份
B.增量备份
C.关键项目备份
D.后备媒体
测量以下汽车罐车油品,求容积值。①车号4#,油水总高1068mm,水高15mm;②车号5#,空高343mm;