Centrifugal pumps, however, can be designed with a number of impellers () to attain a large amount of liquid.
A. in series
B. in parallel
C. assembled
D. together
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有一名脑外伤病人,CT示右颞部梭形高密度影像,脑室中线受压移位,其诊断是()。
A. 脑挫伤
B. 硬膜下血肿
C. 硬膜外血肿
D. 脑内血肿
E. 高血压脑出血
全科医生不需要对病人提供预防性照顾。
A. 正确
B. 错误