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【简答题】
An x-ray generator, such as those used in hospitals, emits radiation with a wavelength of 1.544 Å. What is the energy in joules of a single photon? How many times more energetic is a single x-ray photon of this wavelength than a photon emitted by a ruby laser?
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举一反三
【单选题】speeches arranged in causal order organize main points so as to show a ______ relationship.
A.
directional
B.
time
C.
cause-effect
D.
subtopical
【判断题】Cellulose is used as a fiber (or roughage) to eliminate the waste in the intestine for human beings and most animals.
A.
正确
B.
错误
【单选题】患者，女性,20岁,肺结核高热昏迷，呼吸困难，咳嗽咯血3周，X线两肺均匀分布等大、密度均匀的粟粒状状阴影，最可能的诊断是
A.
空洞型肺结核
B.
干酪性肺炎
C.
急性血行播散型肺结核
D.
结核性胸膜炎
【判断题】in a speech arranged in causal order, the speaker must deal first with the causes and then with the effects.
A.
正确
B.
错误
【单选题】A “_______” essay is causal chains that connect from the reason to the consequence by means of careful language, and chronological or forceful order.
A.
cause and effect
B.
comparison and contrast cause and effect
C.
exemplification
D.
argumentation
【单选题】患者,女,20岁,高热昏迷,呼吸困难,咳嗽咯血3周,OT试验1:1000(一),ESR50mm/h,X线两肺均匀分布等大、密度均匀的小点状阴影,最可能的诊断是:
A.
金黄色葡萄球菌性肺炎
B.
肺泡细胞癌
C.
急性血行播散型肺结核
D.
矽肺合并感染
E.
支气管肺炎
【判断题】Informative speeches about concepts are usually arranged in causal order.
A.
正确
B.
错误
【单选题】患者女性,20岁,高热昏迷,呼吸困难,咳嗽咯血3周,OT试验:1:1000(一), ESR50mm/h,x线两肺均匀分布等大、密度均匀的小点状阴影,最可能的诊断是
A.
金黄色葡萄球菌性肺炎
B.
肺泡细胞癌
C.
急性血行播散型肺结核
D.
矽肺合并感染
E.
支气管肺炎
【单选题】患者,女性,20岁,高热昏迷,呼吸困难,咳嗽咳血3周,OT试验1:1000(-),ESR50mm/h,x线两肺均匀分布等大、密度均匀的小点状阴影,最可能的诊断是
A.
金黄色葡萄球菌性肺炎
B.
肺泡细胞癌
C.
急性血行播散型肺结核
D.
矽肺合并感染
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