以下哪种因素是参照卫生部颁发的《职业危害因素分类目录》,从职业危害的角度进行的分类结

题型:单项选择题

问题:

以下哪种因素是参照卫生部颁发的《职业危害因素分类目录》,从职业危害的角度进行的分类结果( )

A.粉尘
B.职业健康管理不完善
C.触电
D.行为性危险有害因素

考点:安全工程师安全生产管理知识安全生产管理知识
题型:单项选择题

若直线l:ax+by+4=0(a>0,b>0)始终平分圆C:x2+y2+8x+2y+1=0,则ab的最大值为________.

题型:单项选择题
短文改错。
     此题要求改正所给短文中的错误。对标有题号的每一行作出判断:
     如有错误(每行只有一个错误),则按下列情况改正:
     此行多一个词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。
     此行缺一个词:在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词。
     此行错一个词:在错的词下面一横线,在该行右边横线上写出改正后的词。
Dear Ms. Smith,
I apprecite your help very well. On the first day of
Camp, you came up to myself while I was sitting alone. After
That, you always gave me specially attention and inspired 
to me to join in activities. As a result, I gradually got to know
The other campers. Because the help you gave me that summer,
My life changed. I gained so much confidence that I go back 
To school as new person. My grades improved. I became
Very active but made new friends. Today, I got a letter that
Said I had been admitting to a college. I am proud of it. I just 
Want to thank you for helping me becoming a different person.
                                                                                Yours, 
                                                                                 Bob
1. _____
2. _____
3. _____ 
4. _____
5. _____
6. _____
7. _____
8. _____
9. _____                                                
10. _____
题型:单项选择题

Lingling hasn't got ______ new books,  but Mary has got ______ . [ ]

A. any;  any

B. some;  some

C. any;  some

D. some;  any

题型:单项选择题

肾的良性肿瘤下列哪一种最多见

A.血管平滑肌脂肪瘤

B.肾肌血管瘤

C.肾腺瘤

D.肾肌脂肪瘤

E.肾纤维瘤

题型:单项选择题

急性肾盂肾炎选择药物的依据是()

A.尿中细菌计数

B.病人症状

C.尿沉渣涂片革兰染色检查

D.尿培养及药物敏感试验

E.以上都不是

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