仓库内的气瓶应怎样排放才能保证安全？
参考答案：
气瓶放置应整齐，戴好瓶帽；立放时，应妥善固定；横放时，头部朝同一方向，垛高不得超过5层。
Studies show the MP3 people have made much use of _____ music may be causing hearing
loss in many people. [ ]
A. enjoy
B. to enjoy
C. enjoying
D. enjoyed
患者血压持续增高，出现脑出血
A．高血压病工期 B．高血压病Ⅱ期 C．高血压病Ⅲ期 D．高血压脑病 E．急进性高血压
