Most doctors recognized that medicine is _____.
A. an art as much it is a science
B. as much an art as it is a science
C. as an art as much it is a science
D. much an art as much it is a science
查看答案
There is always the ____of an earthquake in this region, but so far there has been no sign
A. impossible
B. possible
C. possibility
D. impossibility
各类埋地输气管线至特殊建筑物,特殊的防护地带,炸药及爆炸危险品仓库、军事设施的最小安全防火距离为大于()m。
A. 100
B. 150
C. 200
D. 300
()是消防中广泛应用的天然灭火剂。
A. 泡沫
B. 水
C. 砂
D. 四氯化碳
用于扑灭精密仪器、贵重设备、档案资料及带电设备火灾的灭火器是()灭火器
A. 20
B. 40
C. 15
D. 35