【单选题】关于烧伤患者的体位摆放方法,不正确的是
C.
单纯下肢前侧烧伤时,膝关节微屈10°~20°
【单选题】I don't know his address, ______.
A.
otherwise I will write to him
B.
otherwise I would write to him
C.
otherwise I had written to him
D.
otherwise I would have written to him
【单选题】下列语句中,错误的是( )。
A.
WRITE(*,*)(1,A(I),I=1,N)
B.
WRITE(*,*)(N,A(I),I=1,N)
C.
READ(*,*)N,A(I),I=1,N)
D.
READ(*,*)(N,A(I),I=1,N)
【单选题】David thinks he might retire early because ______.
A.
people have to be young to write computer programs
B.
he wants to stop working when he is a millionaire
C.
he thinks his firm might go bankrupt
D.
he thinks computer games might not always sell so well
【判断题】角铁式车床夹具常用于加工壳体,支座,接头等类零件上的外圆柱面及端面。当被加工工件的主要定位基准是平面,被加工面的轴线对当要定位基准保持一定位置关系时,相应的夹具上的平面定位元件设置与车床主轴轴线也必须保持一定位置关系。
【判断题】试调查的目的先收集一些资料 , 回答部分调查所针对的问题。
【单选题】在车床上加工一个要求保证与外圆同轴的内孔表面时,可釆用自定心卡盘直接夹持工件的外圆面来进行。显然,此时影响加工表面与定位基准面之间位置精度的主要因素是 。
【单选题】车床主轴箱加工顶面时,常以主轴孔为定位基准,这是因为()