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【简答题】People have known since ancient times that aspirin（阿司匹林） reduces pain and lowers high body temperature. But that is not all the drug can do. In recent years, it has been used in other ways, too. Small...
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【简答题】图示配气机构中,曲柄以匀角速度ω=20rad/s绕O轴转动,OA=40cm,AC=CB= cm。当曲柄在两铅垂位置和两水平位置时,求气阀推杆DE的速度。
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【简答题】低压开关主要用作（）、（）、及（）和（）电路。
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【单选题】患者男性, 55 岁,长期反复发作的反酸、嗳气、上腹部疼痛。胃镜检查:见胃小弯侧胃窦部一直径 1.2cm 溃疡,溃疡底部平坦,边缘整齐,溃疡周围黏膜向溃疡集中,最可能的诊断是:
A.
慢性胃溃疡
B.
慢性胃溃疡癌变
C.
溃疡型胃癌
D.
慢性胃炎
E.
急性胃炎
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【简答题】At normal body temperature，37℃， ．The concentration of H + and OH - for a neutral solution at this temperature are(    )and(    )，respectively．
查看完整题目与答案
【判断题】To draw a body-temperature chart, we need 6 readings.
A.
正确
B.
错误
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【单选题】What conclusion can we draw from the passage?
A.
The human body requires a large amount of hormones.
B.
Synthetic hormones can replace a person s natural supply of hormones if necessary.
C.
The quantity of hormones produced and their effect on the body are related to a persons age.
D.
The short child of tall parents probably had a hormone deficiency early in life.
查看完整题目与答案
【简答题】低压开关主要用作 ( )、 ( )及 ( ) 和 ( )电路。 低压开关一般为非自动切换电器,常用的主要类型有( )、( ) 和 ( ) 等。共35分
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【简答题】低压开关主要用作隔离 、转换 及 _________ 和 _________ 电路。
查看完整题目与答案
【单选题】It can be inferred from the passage that some mechanisms that regulate internal body temperature, like sweating and panting, can lead to which of the following?
A.
A rise in the external body temperature
B.
A drop in the body’s internal fluid level
C.
A decrease in the osmotic pressure of the blood
D.
A decrease in the amount of renal water loss
E.
A decrease in the urine’s salt content
查看完整题目与答案
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【简答题】People have known since ancient times that aspirin（阿司匹林） reduces pain and lowers high body temperature. But that is not all the drug can do. In recent years, it has been used in other ways, too. Small...
查看完整题目与答案
【简答题】图示配气机构中,曲柄以匀角速度ω=20rad/s绕O轴转动,OA=40cm,AC=CB= cm。当曲柄在两铅垂位置和两水平位置时,求气阀推杆DE的速度。
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【简答题】低压开关主要用作（）、（）、及（）和（）电路。
查看完整题目与答案
【单选题】患者男性, 55 岁,长期反复发作的反酸、嗳气、上腹部疼痛。胃镜检查:见胃小弯侧胃窦部一直径 1.2cm 溃疡,溃疡底部平坦,边缘整齐,溃疡周围黏膜向溃疡集中,最可能的诊断是:
A.
慢性胃溃疡
B.
慢性胃溃疡癌变
C.
溃疡型胃癌
D.
慢性胃炎
E.
急性胃炎
查看完整题目与答案
【简答题】At normal body temperature，37℃， ．The concentration of H + and OH - for a neutral solution at this temperature are(    )and(    )，respectively．
查看完整题目与答案
【判断题】To draw a body-temperature chart, we need 6 readings.
A.
正确
B.
错误
查看完整题目与答案
【单选题】What conclusion can we draw from the passage?
A.
The human body requires a large amount of hormones.
B.
Synthetic hormones can replace a person s natural supply of hormones if necessary.
C.
The quantity of hormones produced and their effect on the body are related to a persons age.
D.
The short child of tall parents probably had a hormone deficiency early in life.
查看完整题目与答案
【简答题】低压开关主要用作 ( )、 ( )及 ( ) 和 ( )电路。 低压开关一般为非自动切换电器,常用的主要类型有( )、( ) 和 ( ) 等。共35分
查看完整题目与答案
【简答题】低压开关主要用作隔离 、转换 及 _________ 和 _________ 电路。
查看完整题目与答案
【单选题】It can be inferred from the passage that some mechanisms that regulate internal body temperature, like sweating and panting, can lead to which of the following?
A.
A rise in the external body temperature
B.
A drop in the body’s internal fluid level
C.
A decrease in the osmotic pressure of the blood
D.
A decrease in the amount of renal water loss
E.
A decrease in the urine’s salt content
查看完整题目与答案