单选题
发布日期:2021-03-22
Unsafe actions
Orderliness
Frequent inspections
Good work habit
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当外汇期货价格(),投资者适合进行期现套利。
在华为路由器中,CQ的各队列的默认长度为()。
索鞍
一下程序段的运行结果是()
癌转移至淋巴结时,首先出现在( )
在心肺复苏过程中,如发生阵发性室性心动过速,宜首选()
油(气)管道与电气化铁道平行敷设时,管道接近侧边缘与铁道最外侧带电体垂直投影的水平距离不应小于()。
患者,男,55岁,3年前因胃癌行全胃切除术。近1年来渐感头晕、乏力,活动后心悸、气急。外周血检查结果:RBC2.5×1012/L,Hb95g/L,网织红细胞0.15%,MCV115fl,MCH38pg,MCHC330g/L。 根据外周血检查结果,该患者可初步诊断为()
女,20岁,胸骨左缘第4肋间可闻及喀嚓音,心尖部可闻及收缩中晚期杂音( )|女,45岁,胸骨左缘第3肋间闻及舒张期叹气样杂音,心尖部闻及舒张中晚期隆隆样杂音( )|女,49岁,心脏杂音病史25年,经常出现头晕、劳力时胸痛、呼吸困难,胸骨右缘2肋间可闻及收缩期杂音( )|女,38岁,心尖部第一心音亢进,胸骨左缘第4肋间闻及开瓣音( )
测量某医学指标,得到500个性质相同且近似服从正态分布的实验数据可求出算术平均数(),标准差(s)和标准误差()。区间所代表的含义为( )。
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