CAD制图中“对象捕捉”的快捷键为()
A、F1
B、F3
C、F8
D、F9
参考答案:B
患者男,25岁,因急性病毒性心肌炎住院2周,Holter监测结果为夜间出现间歇性二度Ⅰ型房室传导阻滞,心率为48次/min,此时的处理是()
A.人工心脏起搏
B.异丙肾上腺素静脉滴注
C.激素治疗
D.维持原治疗
E.干扰素治疗
we are alive , we can make it through through this natural disaster
A.Even if
B.As soon as
C.As if
D.so long as