单选题
发布日期:2021-03-22
ventilated and tagged
ventilated and cooled down
insulated and encased
insulated and warmed up
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如图6-4-4所示,两水箱水位恒定,水面高差H=10m,管道直径d=10cm,总长度L=20m,沿程阻力系数λ=0.042,已知所有的转弯、阀门、进、出口局部水头损失合计为:hi=3.2m。则通过管道的平均流速为( )。图6-4-4
合谷穴位于手背一、二掌骨之间,约平第二掌骨中点处。()
一般纳税企业购买商品的增值税、关税、消费税等通过“税金及附加”科目核算。
下列关于一期工程煤气净化流程特征的说法不正确的是()。
卡瓦纳曾把会谈中的沉默分为三种:创造性的沉默、()和()。
女性,18岁。月经量多,逐渐面色苍白,乏力,HGB70g/L,部分红细胞大小不等,中心淡染;骨髓铁粒幼细胞减少。该患者可能的诊断是()
王某(15岁,涉嫌抢劫)一案的审理过程应当不公开,下列做法不合法的有( )
以下哪项不是继发性不稳定型心绞痛的诱发因素()
某学校152名学生,8:50~9:00课间餐,大约3h后,78人发生了恶心,剧烈反复的呕吐,同时伴有上腹部的疼痛,腹泻次数少,体温不高。根据以上症状,判断此次食物中毒可能是()。
低头时项部最隆起处对应()
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