【判断题】微量加样器使用完毕后,应调整至量程刻度,以恢复弹簧的松弛状态,延长使用寿命。
【单选题】---______ he have been chosen as captain of our school football team? ---Yes, he______. Can’t you see he’s wearing an armband?
【单选题】下列不属于 U 型管压差计指示液要求的是( )
【单选题】关于老年人生理变化,描述错误的是
C.
老年人胃酸分泌增多,使消化性溃疡发生几率增高
【单选题】Captain James Cook took _____ of the islands in 1769 and from that time British people started to settle in New Zealand. [ ]