关于塑料件的修复，有以下四种说法，其中（）是正确的。 A.双组分黏合剂可以代替焊接

历史上最令人瞩目的三种社会分层现象是（）、（）和（）。

Most American families are smaller 小题1:t__________ the families in other countries. Most American families have one or two parents and one or two children each. Children 小题2:i__________ the USA will leave their parents' home when they小题3:g____________up. They usually live far from their parents 小题4:b____________ they want to find good jobs. They often 小题5:w_____________ to their parents or telephone them . And they often go to visit their parents 小题6:o_____________ holidays.

Parents usually let their children 小题7:c____________ their own jobs. Americans think it important for young people to decide on their lives by小题8: t_______________.

Parents ask 小题9:c___________ to do some work around their house. And in many families , parents pay children for doing some housework so that they learn 小题10:h_______________to make money for their own use.

龙门架(井字架)提升机作业中，当钢丝绳突然断开时，使吊篮不会坠落的安全装置是(　　)。

A．吊篮安全门

B．吊篮停靠装置

C．吊篮断绳保护装置

D．吊篮F极限限位装置

每逢新春佳节的时候，闽南地区和台湾岛内的一些地方就活跃起一种流传已久的民俗活动。相传源于宋代梁山泊好汉劫法场、救宋江的故事，起初只是民间武术活动，在农耕时代的闽南一带随处可见。后来，它成为一种民俗活动形式传承下来，而且传播到了台湾。这种活动叫（）。

A.套宋江

B.舞狮

C.腰鼓

D.白鹤拳

下列的说法中，对飞机或者滑翔机类别等级的飞行教员执照申请人的要求错误的是：（）.

A.具备在失速识别、螺旋进入、保持和改出程序方面的技术和教学能力

B.在所申请飞行教员执照的航空器类别和级别的航空器上担任机长至少15小时

C.在所申请飞行教员执照的航空器类别和级别的航空器上担任机长至少50小时