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【单选题】
已知函数 的导数为 且满足 ,则 ( )A.
30
B.
-30
C.
15
D.
-15
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参考解析：
知识点：
皮皮学刷刷变学霸
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【单选题】患者李某，糖尿病，需留尿作尿糖定量检查，采集标本方法合适的是：
A.
留清晨第一次尿约l00ml
B.
随时留尿l00ml
C.
饭前留尿l00ml
D.
留24小时尿
E.
用留中段尿法留尿5ml
【单选题】The founder of General Systems theory was____
A.
Luc Besson
B.
L.Von.Bertalanffy
C.
Florence Nightingale
D.
Newman B
E.
Benedict LV
【单选题】请在第__（49）__处填上正确答案。 查看材料
A.
The founder of Benetton began by asking people what they wanted.
B.
There used to be a good reason for this.
C.
When something is sold at a Benetton store， the store records information about the type，size， and color of the item.
D.
Today， there are Benetton shops in major cities all over the world.
E.
This means that customers can go into any Benetton store in the world and be sure of what they are buying.
F.
In other words， Benetton's clothes are made to order.
【单选题】下列有关基准物质的论述中,正确的是
A.
基准物质就是能用直接法配制标准溶液或标定溶液浓度的物质
B.
基准物质就是纯度大于 99.9%的物质
C.
基准物质就是性质稳定的物质
D.
基准物质就是纯度高，而且摩尔质量较大的物质
【单选题】请在第__（48）__处填上正确答案。 查看材料
A.
The founder of Benetton began by asking people what they wanted.
B.
There used to be a good reason for this.
C.
When something is sold at a Benetton store， the store records information about the type，size， and color of the item.
D.
Today， there are Benetton shops in major cities all over the world.
E.
This means that customers can go into any Benetton store in the world and be sure of what they are buying.
F.
In other words， Benetton's clothes are made to order.
【单选题】What is NOT TRU E about Cadums, the founder of Cadmeia?
A.
He is a brother of Europa, Zeus' lover.
B.
He built the city Cadmeia with the help gods.
C.
He slayed the dragon and sew their teeth, from which grew 5 spartoi.
D.
He built high walls and seven gates to protect the city.
【单选题】Called the 'Wordsworth of America',______was the founder of the 19th century American romantic poetry.
A.
Ezra Pound
B.
E. E. Cummings
C.
William Cullen Bryant
D.
Edgar Allen Poe
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