皮皮学，免费搜题
登录
搜题
【单选题】
患者,女性,65岁。被人用轮椅推入医院接诊护士看见其面色发绀,呼吸困难,询问病史得知其有慢性阻塞性肺疾病史。给予吸氧流量应是A.
1-2lmin
B.
2-4l/min
C.
4-61/min
D.
6./min
E.
8-10l/min
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The children were _____ into different groups according to how much they know. [ ]
A.
combined
B.
classified
C.
listed
D.
clarified
【单选题】已知[Ag(NH 3 ) 2 ] + 的逐级稳定常数为K 1 ，K 2 ，请问它的稳定常数K为( )
A.
K 1 +K 2
B.
K 1 -K 2
C.
K 1 /K 2
D.
K 1 ×K 2
【单选题】两直线y 1 =k 1 x+b 1 与y 2 =k 2 x+b 2 相交于y轴，则（ ）
A.
k 1 ≠k 2 ，b 1 ≠b 2
B.
k 1 ≠k 2 ，b 1 =b 2
C.
k 1 =k 2 ，b 1 ≠b 2
D.
k 1 =k 2 ，b 1 =b 2
【单选题】若图中的直线l 1 ，l 2 ，l 3 的斜率为k 1 ，k 2 ，k 3 则（ ）
A.
k 1 ＜k 2 ＜k 3
B.
k 3 ＜k 1 ＜k 2
C.
k 2 ＜k 1 ＜k 3
D.
k 3 ＜k 2 ＜k 1
【单选题】如图，直线l 1 、l 2 、l 3 的斜率分别为k 1 、k 2 、k 3 ，则必有（ ）
A.
k 1 ＜k 3 ＜k 2
B.
k 3 ＜k 1 ＜k 2
C.
k 1 ＜k 2 ＜k 3
D.
k 3 ＜k 2 ＜k 1
【单选题】How much did the triplet boys weigh when they were born?
A.
They were about 2.5 pounds.
B.
They were about 3.2 pounds.
C.
They were about 3 pounds.
D.
They were about 3.5 pounds.
【简答题】How much were the letters worth on the market, and how much was the final deal?
【单选题】How much were the letters worth on the market, and how much was the final deal?
A.
Seven dollars. Five dollars.
B.
Seven dollars. Seven dollars.
C.
Five dollars. Five dollars.
D.
Five dollar. Seven dollars. .
【单选题】关于函数返回值,以下叙述中正确的是________。
A.
函数返回值的类型由函数体内return语句包含的表达式的类型决定
B.
函数返回值的类型由函数首部定义的函数类型决定
C.
若函数体中有多个return语句,则函数的返回值是排列在最后面的return语句中表达式的值
D.
若函数体内没有return语句,则调用函数后不能得到任何值
相关题目：