皮皮学，免费搜题
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【单选题】
哌替啶的作用不包括（ ）。A.
镇痛
B.
镇静
C.
对抗催产素对子宫的兴奋作用，延长产程
D.
减少胃肠的推进性蠕动
E.
降低呼吸中枢对二氧化碳的敏感性
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皮皮学刷刷变学霸
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【简答题】函数 的间断点是(答案直接填写数字,有多个答案的话用分号;隔开)
【简答题】Who invented the printing press? In which year was it invented? The printing press was invented by ___________ in _________.
【单选题】Press printing techniques first appeared in ____.
A.
Germany
B.
Canada
C.
the United States
D.
China
【单选题】The word one in paragraph 2 refers to
A.
clay tablet
B.
scroll
C.
book
D.
printing press
【简答题】If you asked people what the most important invention has been,many would say the printing press. Others _1_ say the wheel.But even though it’s_2_whether the appearance of the printing press affected ...
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