发行人董事会应基于与关联方的法律联系形式对关联联系进行判断。( )

一般认为，防止瓦斯层状积聚的风速应大于（）米/秒。

A.0.1

B.0.5

C.1.5

D.2

用半径为12cm，圆心角为150°的扇形做一个圆锥模型的侧面，则此圆锥底面圆的半径为______cm，侧面积为______cm²．

小腿Pilon骨折时受到的暴力类型为

A．纵向牵拉

B．扭转力

C．垂直压缩

D．剪切力

E．直接碾挫

In low-speed network，it is usually adequate to wait for congestion to occur and then react to it bytelling the source of packets to slow down．In high-speed networks，this approach often works poorly，because in the (71) between sending the notification and notification arriving at the source，thousands of additional (72) may arrive．In ATM network，a major tool for preventing (73) is (74) control．When a host wants a new virtual (75) ，it must describe the traffic to be offeredand the service expected．

（74）处填（）。

A．flow

B．admission

C．traffic

D．time

民事法律行为所附的以下条件中符合法律要求的是( )。

A．如果你在去年的收入达到了20万元，我就把房子卖给你

B．如果乙电视机厂承担产品责任，甲宾馆就购买乙电视机厂的产品

C．如果你帮我把甲打了，我就把钱借给你

D．如果我今年年底出国，我就把房子卖给你