问题
单项选择题 案例分析题
患者，4岁，其父牵拉左手上楼梯时，患儿啼哭，诉肘部疼痛，检查：肘关节无明显异常，桡骨头处有压痛。X线检查无明显异常。
该患儿最可能的诊断是（）.
A.肘关节脱位
B.桡骨小头半脱位
C.桡骨头骨折
D.肱骨髁上骨折
E.肌肉牵拉伤
答案
参考答案：B
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患者，4岁，其父牵拉左手上楼梯时，患儿啼哭，诉肘部疼痛，检查：肘关节无明显异常，桡骨头处有压痛。X线检查无明显异常。
该患儿最可能的诊断是（）.
A.肘关节脱位
B.桡骨小头半脱位
C.桡骨头骨折
D.肱骨髁上骨折
E.肌肉牵拉伤
参考答案：B
| Awarded the Nobel Prize for physics in 1918, German physicist Max Planck is best remembered as the originator of the quantum theory. His work helped usher in a new era in theoretical physics and revolutionized the scientific community’s understanding of atomic and subatomic processes. Planck introduced an idea that led to the quantum theory, which became the foundation of twentieth century physics. In December 1900, Planck worked out an equation that described the distribution of radiation accurately over the range of low to high frequencies. He had developed a theory which depended on a model of matter that seemed very strange at the time. The model required the emission of electromagnetic radiation in small chunks or particles. These particles were later called quantums. The energy associated with each quantum is measured by multiplying the frequency of the radiation, v, by a universal constant, h. Thus, energy, or E, equals hv. The constant, h, is known as Planck’s constant. It is now recognized as one of the fundamental constants of the world. Planck announced his findings in 1900, but it was years before the full consequences of his revolutionary quantum theory were recognized. Throughout his life, Planck made significant contributions to optics, thermodynamics and statistical mechanics, physical chemistry, among other fields. |
The word "revolutionary" as used in Line 16 means ______.
A．radical
B．extremist
C．momentous
D．militaristic