下列各组物质互为同系物的是[ ] A．2H与3H B．CH(CH3)3与CH3C

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问题选择题

下列各组物质互为同系物的是[ ]

A．²H与³H

B．CH(CH₃)₃与CH₃CH₂CH₂CH₃

C．C₂H₆与C(CH₃)₄

D．O₂与O₃

答案

答案：C

单项选择题

When assessing a toddler diagnosed with spastic cerebral palsy, which of the following would the nurse expect to find

A. Toe-walking.
B. Drooling.
C. Facial grimacing.
D. Wide-based gait.

多项选择题

慢性胆囊炎的CT表现为()

A．容易穿孔并在肝内形成脓肿

B．胆囊缩小

C．胆囊增大

D．均合并结石

E．胆囊壁增厚可钙化