在生产中可能突然逸出大量的有害物质或易造成急性中毒或易燃易爆的化学物质的作业场所,必须设计自动报警装置、事故通风设施,其通风换气次数不小于_次/ha事故排风装置的排出口,应避免对居民和行人的影响。
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心肺复苏术是对心跳、呼吸骤停所采取的最初紧急措施。
A. 正确
B. 错误
Assume a JavaBean com.example.GradedTestBean exists and has two attributes. The attribute name is oftype java.lang.String and the attribute score is of type java.lang.Integer. An array of com.example. GradedTestBean objects is exposed to the page in a request- scoped attribute called results. Additionally,an empty java.util.HashMap called resultMap is placed in the page scope. A JSP page needs to add the firstentry in results to resultMap, storing the name attribute of the bean as the key and the score attribute of thebean as the value. Which code snippet of JSTL code satisfies this requirement?()
A. ${resultMap[results[0].name] = results[0].score}
C. ${results[0].value}
属于副承托区()。
A. 上颌牙槽嵴顶
B. 磨牙后垫
C. 切牙乳突
D. 颊侧前庭
E. 颊系带
燃油锅炉停炉吹扫时,()将残油吹入无火焰的热炉膛。
A. 禁止
B. 可以
C. 必须
D. 任意