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【简答题】
25℃时，溶液中含有Fe 3+ 、Fe 2+ ，它们浓度都是0.05mol·dm -3 ，如果要求Fe(OH) 3 沉淀完全，而Fe 2+ 不生成Fe(OH) 2 沉淀，试问溶液的pH应控制为多少？
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举一反三
【简答题】A．He didn't expect to buy a lot. B．He had only one bag of groceries. C．The supermarket is just down the block. D．He thought he'd get a ride with the Smiths.
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【单选题】--Where is the man you talked about yesterday?--Look!______.
A.
Here he comes
B.
Here comes he
C.
Here does he come
D.
Here is he coming
查看完整题目与答案
【判断题】为了减少抽油杆的事故,发展了无游梁式抽油机。
A.
正确
B.
错误
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【简答题】完形填空。 A Frenchman went to visit New York. He didn't know English. When he 1 New York, he 2 a bus to a hotel. It was Sunday. The Frenchman went out for a walk. As he went 3 the street, he suddenly thou...
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【单选题】I______he________for what he had done. But he didn't.
A.
thought; would apologize
B.
thought; apologize
C.
thought; apologized
D.
had thought; would have apologize
查看完整题目与答案
【单选题】引起口腔内感染最常见的病原菌是
A.
无芽胞厌氧菌
B.
甲型链球菌
C.
乙型链球菌
D.
金黄色葡萄球菌
E.
白色念珠菌
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【多选题】新生儿院内感染的特点（）
A.
真菌是引起NICU院内感染的第三种常见病菌
B.
革兰阴性杆菌中假单胞菌属是院内感染的常见细菌
C.
常见病原体的种类：细菌、真菌、病毒
D.
新生儿院内感染的常见部位为皮肤、口腔、呼吸道、消化道、血液
E.
最常见的病毒是巨细胞病毒
查看完整题目与答案
【单选题】______, everything would have been all right.
A.
He had been here
B.
Been here he had
C.
Here he had been
D.
Had he been here
查看完整题目与答案
【简答题】A．He didn't expect to buy a lot. B．He had only one bag of groceries. C．The supermarket is just down the block. D．He thought he'd get a ride with the Kramers.
查看完整题目与答案
【单选题】关于SSI的细菌学下列说法不正确的是：( )
A.
最常见的病原菌是葡萄球菌(金黄色葡萄球菌和凝固酶阴性葡萄球菌)，其次是肠道杆菌科细菌(大肠杆菌、肠杆菌属、克雷伯菌属等)。
B.
SSI的病原菌可以是内源性或外源性的，大多数是内源性的，即来自患者本身的皮肤、黏膜及空腔脏器内的细菌。
C.
手术切开胃肠道、胆道、泌尿道、女性生殖道时，典型的SSI致病菌是革兰阳性菌。
D.
在任何部位，手术切口感染大多由葡萄球菌引起。
查看完整题目与答案
相关题目：
【简答题】A．He didn't expect to buy a lot. B．He had only one bag of groceries. C．The supermarket is just down the block. D．He thought he'd get a ride with the Smiths.
查看完整题目与答案
【单选题】--Where is the man you talked about yesterday?--Look!______.
A.
Here he comes
B.
Here comes he
C.
Here does he come
D.
Here is he coming
查看完整题目与答案
【判断题】为了减少抽油杆的事故,发展了无游梁式抽油机。
A.
正确
B.
错误
查看完整题目与答案
【简答题】完形填空。 A Frenchman went to visit New York. He didn't know English. When he 1 New York, he 2 a bus to a hotel. It was Sunday. The Frenchman went out for a walk. As he went 3 the street, he suddenly thou...
查看完整题目与答案
【单选题】I______he________for what he had done. But he didn't.
A.
thought; would apologize
B.
thought; apologize
C.
thought; apologized
D.
had thought; would have apologize
查看完整题目与答案
【单选题】引起口腔内感染最常见的病原菌是
A.
无芽胞厌氧菌
B.
甲型链球菌
C.
乙型链球菌
D.
金黄色葡萄球菌
E.
白色念珠菌
查看完整题目与答案
【多选题】新生儿院内感染的特点（）
A.
真菌是引起NICU院内感染的第三种常见病菌
B.
革兰阴性杆菌中假单胞菌属是院内感染的常见细菌
C.
常见病原体的种类：细菌、真菌、病毒
D.
新生儿院内感染的常见部位为皮肤、口腔、呼吸道、消化道、血液
E.
最常见的病毒是巨细胞病毒
查看完整题目与答案
【单选题】______, everything would have been all right.
A.
He had been here
B.
Been here he had
C.
Here he had been
D.
Had he been here
查看完整题目与答案
【简答题】A．He didn't expect to buy a lot. B．He had only one bag of groceries. C．The supermarket is just down the block. D．He thought he'd get a ride with the Kramers.
查看完整题目与答案
【单选题】关于SSI的细菌学下列说法不正确的是：( )
A.
最常见的病原菌是葡萄球菌(金黄色葡萄球菌和凝固酶阴性葡萄球菌)，其次是肠道杆菌科细菌(大肠杆菌、肠杆菌属、克雷伯菌属等)。
B.
SSI的病原菌可以是内源性或外源性的，大多数是内源性的，即来自患者本身的皮肤、黏膜及空腔脏器内的细菌。
C.
手术切开胃肠道、胆道、泌尿道、女性生殖道时，典型的SSI致病菌是革兰阳性菌。
D.
在任何部位，手术切口感染大多由葡萄球菌引起。
查看完整题目与答案