机组运行中,滞后前滚筒2~4组支架,要及时打出防片帮板。
参考答案:错
试述三国两晋南北朝时期在科技领域取得的重要成就。
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
小儿脱水性质不明时,第1天静脉补液可选用()
A.1/4张含钠液
B.1/3张含钠液
C.2/3张含钠液
D.1/2张含钠液
E.4:3:2溶液