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【单选题】
关于气管插管病人吸痰说法不正确的是A.
根据病人具体情况确定吸痰间隔时间
B.
痰液粘稠时，可先向气管内滴注蛋白酶
C.
吸痰时加大给氧浓度
D.
动作轻柔，不要反复上下提插
E.
每次吸引时间不超过20s
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