在人类的发明创造活动中，对某一事物的“习惯性”思维往往制约着人们的发明眼界。而对这种

局内投交由外省寄来的包裹，发现包裹内夹有重16克的信函，投交时应向收件人补收邮费（）元。

A.0.80 

B.1.60 

C.1.20

预制好的铸型烘烤及焙烧最佳方法是（）。

A.在煤火中加热

B.用煤气加热

C.放置在有温度提示的电烤箱中

D.放置在有温度提示及能自动升温、恒温的电烤箱中

E.放置在无温度提示的电烤箱中

关于眼球的描述，错误的是（）

A.睫状肌舒张，晶状体变厚，曲度变大

B.眼房内充满房水

C.房水渗入巩膜静脉窦

D.前房经瞳孔与后房相通

E.玻璃体为无色透明的胶状物

In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.

In low-speed network, it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down. In high-speed networks, this approach often works poorly, because in the (1) between sending the notification and notification arriving at the source, thousands of additional (2) may arrive. In ATM network, a major tool for preventing (3) is (4) control. When a host wants a new virtual (5) , it must describe the traffic to be offered and the service expected.

1（）

A．interval

B．time

C．slot

D．delay