心室颤动时下述最有效措施是()
A.人工呼吸
B.电除颤
C.心内注射肾上腺素
D.静注利多卡因
E.胸外心脏按压
参考答案:B
—Where is Sally, Jack?
—She _________. She wants to be a swimming player.[ ]
A. walks
B. is swimming
C. swims
D. is sleeping
工作环境温度为-25-20度,板厚20mm,起重机工作级别为A5的重要承载构件的材料,应选用。
A.Q235—B;
B.Q235—C;
C.Q235—D;
D.Q235—AF