【单选题】患儿男,12岁。出生时身长及体重正常。成绩中等,家庭环境尚好。家长发现3~4岁后生长慢于其他儿童,最近与同班同学相比差异更大。查体:身高110cm,体重25kg,心、肺、腹(﹣)。双睾丸较同龄人小。首先可不考虑以下哪种疾病()
【简答题】切割是把坯料 、 或 工件料头的锻造工序。
【单选题】圆C:x 2 +y 2 =1,直线l:y=kx+2,直线l与圆C交于A,B,若| + |- |(其中O为坐标原点),则k的取值范围是( )
【单选题】The cabin attendants may ______ dangerous goods carried by passengers.
【单选题】若点A(x 1 ,y 1 )和点B(x 2 ,y 2 )是直线y=kx+b(k>0)上的两点,且x 1 <x 2 ,则y 1 与y 2 的大小关系 [ ]
【简答题】如图,直线y 1 =kx+b与直线y 2 =mx+n相交于点(2,-1),则不等式kx+b
【简答题】如图,直线y =kx(k>0)与双曲线 交于A(x 1 ,y 1 ),B(x 2 ,y 2 )两点,则2x 1 y 2 -7x 2 y 1 =__
【简答题】如图,直线y =kx(k>0)与双曲线 交于A(x 1 ,y 1 ),B(x 2 ,y 2 )两点,则2x 1 y 2 -7x 2 y 1 =___________.
【单选题】There is a cabin for the Master on the fourth deck between the radio room and the Chief Engineer`s cabin.
A.
The radio room is next to the Chief Engineer`s cabin
B.
The radio room is next to the Master`s cabin
C.
The radio room is below the Chief Engineer`s cabin
D.
The radio room is below the Master`s cabin