患者被汽车撞伤,右上腹剧痛,呼吸36次/分,脉搏100次/分,BP90/65ˉmmHg,诊断不明,禁用
A.非那根B.安定C.6ˉ氨基己酸D.吗啡E.鲁米那
参考答案:D
One impact that the burning of ______ fuels has had on the Earth's environment has been the increase of carbon dioxide in the earth's atmosphere.
A.vehicle
B.oil
C.gas
D.fossil
钻孔时,对钻头寿命的影响()。
A.切削深度比切削速度大
B.切削深度比进给量大
C.切削速度比进给量大