正确答案: C

每小时或半小时一次

题目：船舶重危病人护理，要求测体温、脉搏、呼吸并记录

解析：C

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举一反三的答案和解析：

[单选题]Each cylinder is closed at the top by a _____, made of a special heat-resistant steel.

cylinder cover

[单选题]In the Second paragraph, the underline word "Who", in such a context, stands for_____.

the Administration, the recognized organization or the nominated surveyor responsible for issuing the relevant Certificate

[单选题]A large change in ambient temperature, or using an oil of a viscosity different than the one recommended by the manufacturer in a mechanical hydraulic governor, will result in the need to adjust the

compensating needle valve

[单选题]freeboard

干舷

[单选题]在狭水道航行中，利用导标方位导航，应保持：()

导标方位不变

[单选题]In the refrigeration system, a shortage of refrigerant is indicated by

bubbles in the sight glass

[单选题]航海上为了简化计算，通常将地球当作：()

圆球体

[单选题]经空气飞沫传播的疾病有______。

肺结核

[单选题]落水者在低温水中，最大的危险是：

过冷现象