烧结矿中FeO高、还原性低的主要原因是(),还原气体难以接触。
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扶正器钻具组合只能用于改变井眼斜度,不能用来改变井眼方位。
A. 正确
B. 错误
对于慢性癌痛患者来说,推荐的阿片类镇痛药物的给药途径是()
A. 静脉注射
B. 肌内注射
C. 舌下
D. 直肠给药
E. 口服
采用保证担保方式的,保证人应与贷款银行签订保证合同,保证人为借款人提供的贷款担保为全额连带责任保证,借款人与保证人之间可相互提供保证。
A. 正确
B. 错误
A conscious victim who has suffered a blow to the head has symptoms that indicate the possibility of concussion. If the patient feels no indication of neck or spine injury,recommended treatment would include().
A. turning the victims's head to the side to keep his airway open
B. positioning the victim so the head is lower than the body
C. giving the victim water if he is thirsty,but no food
D. elevating the head and shoulders slightly with a pillow