【单选题】某猪场圈养的育肥猪出现精神沉郁,食欲减退,肌肉震颤,弯腰弓背,喜卧;腹泻,粪便带血。剖检病死猪贫血;空肠和回肠的浆膜层见到大量豌豆大的灰红色相间坏死结节;黏膜发炎,有溃疡灶;回肠段出现肠穿孔;剪开肠腔发现大量附着于肠黏膜或游离于肠腔内的淡红色 50 ~ 670mm 不等的长圆柱形虫体,虫体体表有环状条纹,前端较粗,后端逐渐变细,前端有吻突。 可初步判断该猪场猪只感染的病原是( )。
【判断题】所谓虚拟仪器,是指在测试时整个测试系统组成中可以充分利用计算机硬件和软件,但是传感器必不可少。
【单选题】My car won't start because the engine has. Would you like to give me a lift?
【多选题】根据所使用的仪器硬件不同,虚拟仪器硬件系统可以分为
【多选题】从组成结构上 , 虚拟仪器 的组成可以分为
【简答题】(2013·高考重庆卷)The engine just won’t start.Something seems________wrong with it. A.to go B.to have gone C.going D.having gone
【单选题】(2013·重庆高考)The engine just won't start.Something seems ________ wrong with it.
【简答题】A.The horse won over the train. B.The horse lost the race. C.The engine broke down and the train stopped. D.The engine broke into several parts.