如果外周阻力不变，每搏输出量增大，则动脉血压的变化为A．收缩压升高，舒张压降低B．收

自动舵各调节旋钮的作用和调节方法如何？

短文改错（共10小题，每小题1分，满分10分）

One day a child was playing with a vase in great value．         小题1:      

He careless put his hand into it．Hard as he tried,              小题2:     

he could not pull it out．His father tried his best, too．          小题3:     

but their efforts were in a vain．They were thinking of breaking 小题4:     

the vase when the father said, "Now, my son, why have          小题5:．      

one more try? Open your hand or hold your fingers out        小题6:     

straight as you see I doing, and then pull．" To his              小题7:  

surprise, the child says, "I can’t hold my fingers straight         小题8:

like that, because I don’t want to drop my penny．" Thousand of us   小题9:      

sometimes are so busy hold on to the world’s worthless ．     小题10:

penny that we cannot achieve liberation．

支气管扩张痰量与下列哪个因素有关()

A．多喝水

B．季节

C．体位

D．合并肺结核

E．合并支气管哮喘

在今天的商业世界中，供过于求是普遍现象。为了说服顾客购买自己的产品，大规模竞争就在同类商品的生产企业之间展开了，他们得经常设法向消费者提醒自己产品的名字和优等的质量，这就需要靠广告。 对这段文字概括最恰当的是( )。

A．广告是商业世界的必然产物

B．各商家之间用广告开展竞争

C．广告就是要说服顾客买东西

D．广告是经济活动中供过于求的产物

“秘密载体再投批条”上应加盖（）。

A、投递日戳

B、经手人名章

C、经手人和主管人名章

D、投递日戳和经手人名章