单项选择题

The physician orders supplemental oxygen for a client with a respiratory problem. To provide the highest possible oxygen concentration, the nurse expects to use which oxygen delivery device

A．Nasal cannula.
B．Venturi mask.
C．Partial rebreathing mask.
D．Nonrebreathing mask.
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单项选择题
Before administering a tube feeding to a toddler, which of the following methods should the nurse use to check the placement of a nasogastric (NG) tube
A．Abdominal X-rays.
B．Injection of a small amount of air while listening with a stethoscope over the abdominal area.
C．A check of the pH of fluid aspirated from the tube.
D．Visualization of the measurement mark on the tube made at the time of insertion.
单项选择题
Which of the following activities should a 2-year-old child to be able to do()

A．Build a tower of eight cubes.
B．Point out a picture.
C．Wash and dry his hands.
D．Remove a garment.
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