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【多选题】
对于分子运动而言,等效原理是指A.
升高温度与缩短观察时间等效
B.
降低频率与延长观察时间等效
C.
升高频率与延长观察时间等效
D.
升高温度与延长观察时间等效
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举一反三
【单选题】Death Valley is one of the most famous deserts in the United States, covering a wide area with its alkali sand. Almost 20 percent of this area is well below sea level, and Badwater, a salt water pool,...
A.
Tomesha
B.
Death Valley
C.
Nevada
D.
Badwater
【简答题】阅读理解。 Death Valley is one of the most famous deserts in the United States, covering a wide area with its alkali sand. Almost 20 percent of this area is well below sea level, and Badwater, a salt water...
【单选题】The area is ______ with trails, some as wide as boulevards, that have been cut and maintained by elephants.
A.
blackmailed
B.
latticed
C.
isolated
D.
galloped
【单选题】质检部门从某业生产一天生产的手机中随机抽取 20部进行检查,推断该批手机的合格率。这项研究的总体是( )
A.
20部手机
B.
一天生产的全部手机
C.
20部手机中合格的手机
D.
一天生产的手机中合格的手机
【单选题】男,43岁。左下后牙食物嵌塞2年余。检查:左下第二前磨牙远中邻面龋洞,已穿髓,探诊无反应,叩痛(一),X线片显示35远中邻面龋洞与髓腔相通,根尖周无明显异常。应诊断为
A.
深龋
B.
牙髓坏死
C.
牙内吸收
D.
牙外吸收
E.
慢性根尖周炎
【简答题】Death Valley is one of the most famous deserts in the United States, covering a wide area with its alkali sand Almost 20 percent of this area is well below sea level, and Badwater, a salt water pool, ...
【简答题】Death Valley is one of the most famous deserts in the United States, covering a wide area with its alkali sand. Almost 20 percent of this area is well below sea level, and Badwater, a salt water pool,...
【单选题】质检部门从某企业一天生产的手机中随机抽取 20 部进行检查,推断该批手机的合格率。这项研究的总体是( )
A.
20 部手机
B.
20 部手机中合格的手机
C.
一天生产的全部手机
D.
一天生产的手机中合格的手机
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