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【简答题】
在转炉炼钢冶炼过程中，出现熔池温度低，可采用（）、（）提温。
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举一反三
【单选题】调整休息环境下列哪项是合理的
A.
病室内应定时开窗通风换气，每次2h
B.
气管切开病人，室内性对湿度为30%
C.
婴儿室、产房、手术室以22～24℃为宜
D.
老弱病残病人室温应保持在37℃左右
【单选题】The demand for sirloin steak is probably more elastic than the demand for all meat because
A.
steak is very expensive.
B.
people are worried about cholesterol.
C.
cattle raising is not very profitable.
D.
there are more substitutes for sirloin steak than for all meats.
【单选题】调整休养环境下列哪种是合理的
A.
病室内应定时开窗通风换气，每次 2 小时
B.
气管切开病人，室内相对湿度应为 30%
C.
老弱病残病人室温应保持在 37 ℃
D.
婴儿室、产房、手术室温度以 22~ 24 ℃为宜
【单选题】调整修养环境下列哪种是合理的:
A.
病室内应定时开窗通风换气,每次两小时
B.
气管切开病人,室内相对湿度应为30%
C.
婴儿室、产房、手术室温度应以22-24℃为宜
D.
老弱病残病人室温应保持在37℃左右
E.
产妇休息室应保温不能开窗
【单选题】调整休养环境下列哪种是合理的
A.
病室内应定时开窗通风换气,每次2小时。
B.
气管切开病人,室内相对湿度应为30%。
C.
婴儿室、产房、手术室温以22~24°C为宜。
D.
老弱病残病人室温应保持在37°C左右。
E.
产休室保暖不能开窗
【单选题】某站水准测量时,由 A 点向 B 点进行测量,测得 A 、 B 两点之间的高差为 -0.326m ,且 B 点水准尺的读数为 1.378m ,则 A 点水准尺的读数为
A.
1.052m
B.
1.704m
C.
1052m
D.
1704m
【单选题】The price of a pound of sirloin steak is five times the price of a pound of ground beef. You are not in consumer equilibrium unless:
A.
you consume five times as much ground beef as you do sirloin steak.
B.
you consume five times as much sirloin steak as you do ground beef.
C.
the total utility you derive from consuming sirloin steak is five times the total utility you derive from consuming ground beef.
D.
your marginal utility from the last pound of sirloin steak consumed is five times that of the last pound of ground beef consumed.
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