在高压、大功率应用场合，可以采用（）以提高装置容量。 A.开关器件直接串并联技术 B

Bob is an English boy. His eyes are blue. Li Ming is a tall boy. His eyes are black. They are good friends. Bob’s hair is yellow and Li Ming’s hair is black. Li Ming’s mom is a Chinese teacher. Bob’s mom is an English teacher. She and Li Ming’s mom are in the same school. Bob’s dad（父亲） is a doctor(医生). Bob and his dad look different. He looks like his mom. Bob’s family(家庭) are new in China. Li Ming’s dad and mom help them. They like their English friends.

根据短文内容, 回答下列问题。

小题1: What color are  Li Ming’s eyes?

______________________________

小题2: What color is  Bob’s hair?

______________________________

小题3:Is Bob’s mom a Chinese teacher?

______________________________

小题4:Are Bob’s mom and Li Ming’s mom in different schools?

______________________________

小题5:Does Bob look like his father?

______________________________

腰椎间盘向后外侧突出的患者，慎用的运动是

A．仰卧位桥式运动

B．俯卧位“飞燕式”运动

C．俯卧位腹下垫枕腰屈曲再直腰运动

D．仰卧双下肢同时直腿抬高训练腹肌

E．仰卧位屈髋、屈膝，双手抱膝牵拉腰背软组织

先天性心脏病临床上根据心脏及大血管之间有无分流分为：（）、（）、（）三型。

沿岩层探放（）等含水体时，按规定确定探水钻孔超前距离和止水套管长度。

A.含水层

B.断层

C.陷落柱

D.老窑

锻炼的坚持性