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【多选题】
下列调节钙和磷代谢的主要激素有
A.
活性维生素D
B.
甲状旁腺激素
C.
降钙素
D.
肾上腺素
E.
抗佝偻病维生素
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【多选题】空压机中间冷却的作用是（）。
A.
降低下一级吸气温度
B.
提高输气系数
C.
减少功耗
D.
提高下一级吸气温度
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【单选题】Children are advised to _________ their food carefully in their childhood. .
A.
chew
B.
digest
C.
swallow
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【判断题】甲午战争以后，新式企业多为清政府一手操办，或官办或官督合办。()
A.
正确
B.
错误
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【判断题】柴油机中间冷却器的作用是将压缩空气冷却，使其密度进一步降低，以增加发动机的进气量，有利于提高柴油机性能。( )
A.
正确
B.
错误
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【判断题】甲午战争以后,或官办或官督合办的新式企业多为清政府一手操办。()
A.
正确
B.
错误
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【单选题】空压机中间冷却器的作用是（）。
A.
降低下一级吸气温度
B.
提高输气系数
C.
都不是
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【单选题】Parents are advised to put books __________ they are easily accessible to children .
A.
which
B.
where
C.
in which
D.
who
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【简答题】What does “Pacific Century” refer to?
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【简答题】In America, most people don’t get enough sleep. Children aged 5 to 12 are advised to sleep 10 to 11 hours every night, but most of them can’t sleep that long. A study found that about 41 million Ameri...
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【单选题】If children have flulike symptoms, their parents ______.
A.
are advised not to give them aspirin
B.
should watch out for signs of Reye syndrome
C.
are encouraged to take them to hospital for vaccination
D.
should pr them from mixing with people running a fever
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【多选题】空压机中间冷却的作用是（）。
A.
降低下一级吸气温度
B.
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【单选题】Children are advised to _________ their food carefully in their childhood. .
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查看完整题目与答案
【判断题】甲午战争以后，新式企业多为清政府一手操办，或官办或官督合办。()
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【判断题】柴油机中间冷却器的作用是将压缩空气冷却，使其密度进一步降低，以增加发动机的进气量，有利于提高柴油机性能。( )
A.
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【判断题】甲午战争以后,或官办或官督合办的新式企业多为清政府一手操办。()
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【单选题】空压机中间冷却器的作用是（）。
A.
降低下一级吸气温度
B.
提高输气系数
C.
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查看完整题目与答案
【单选题】Parents are advised to put books __________ they are easily accessible to children .
A.
which
B.
where
C.
in which
D.
who
查看完整题目与答案
【简答题】What does “Pacific Century” refer to?
查看完整题目与答案
【简答题】In America, most people don’t get enough sleep. Children aged 5 to 12 are advised to sleep 10 to 11 hours every night, but most of them can’t sleep that long. A study found that about 41 million Ameri...
查看完整题目与答案
【单选题】If children have flulike symptoms, their parents ______.
A.
are advised not to give them aspirin
B.
should watch out for signs of Reye syndrome
C.
are encouraged to take them to hospital for vaccination
D.
should pr them from mixing with people running a fever
查看完整题目与答案