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【单选题】
小儿小便训练开始的时间是A.
出生后3个月
B.
出生后6个月
C.
出生后9个月
D.
出生后1个月
E.
出生后1周岁
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】可逆循环过程的熵变为________________；不可逆过程的熵变________________。
【简答题】能与肾上腺素和去甲肾上腺素结合的受体称为______受体。该受体又分为______和______两种类型。
【简答题】A. cycle B. city C. crop D. certain
【单选题】Noting that the number of crimes committed in a certain city had decreased in 1982 by 5.2 percent in comparison with 1981 , the police chief of the city said, 'We see here the result of the innovative...
A.
Several cities that have recently increased spending for police programs experienced no decrease in crime in 1982, as compared with 1981.
B.
The number of crimes committed in the city is estimated , by the same method each year, from the number of crimes reported.
C.
The number of crimes committed in the suburban areas surrounding the city rose by about 5 percent in 1982 over the figure for 1981 and were nearly equal in number to those in the city in 1982.
D.
The number of crimes committed in the city in 1982 was 10 percent higher than the number committed in 1972.
E.
The size of the age group most likely to commit crimes decreased considerably in the city in 1982, as against 1981, because of a declining birth rate.
【单选题】a. The speaker is certain that Sydney is the biggest city in Australia. b. The speaker wants it to be confirmed that Sydney is the biggest city in Australia.
A.
The speaker is certain that Sydney is the biggest city in Australia.
B.
The speaker wants it to be confirmed that Sydney is the biggest city in Australia.
【单选题】肾上腺素属于()。
A.
β-肾上腺素能受体兴奋剂
B.
β-肾上腺素能受体阻断剂
C.
α-肾上腺素能受体兴断剂
D.
α-肾上腺素能受体阻断剂
E.
α、β肾上腺素能受体兴奋剂
【单选题】交感神经兴奋引起心率加快，由下列哪种受体介导?
A.
α 1 肾上腺素能受体
B.
α 2 肾上腺素能受体
C.
β 1 肾上腺素能受体
D.
β 2 肾上腺素能受体
E.
M胆碱能受体
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