搜题请搜索小程序“爱下问搜题”
问题 单项选择题

（）是指不穿透皮肤或进入身体无菌环境，但密切接触粘膜或受损皮肤的设备。

A.无风险设备

B.低风险设备

C.中级风险设备

D.高风险设备

E.极高风险设备

答案

参考答案：C

填空题

一个圆锥的体积是24m3，与它等底等高的圆柱的体积是______．
查看答案
单项选择题

Traditional network layer packet forwarding relies on the information provided by network layer  (1) protocols, or static routing, to make an independent (2) decision at each hop within the network. The forwarding  (3) is based solely on the destination  (4) IP address. All packets for the same destination follow the same path across the network if no other equal-cost paths exist. Whenever a router has two equal-cost  (5) toward a destination, the packets toward the destination might take one or both of them, resulting in

空白（3）处应选择（）

A.connection

B.window

C.decision

D.destination
查看答案