男孩5岁,右手背侧Ⅱ度烧伤,左手掌侧Ⅰ度烧伤,其烧伤面积为()。
A.1%
B.2%
C.2.5%
D.1.25%
E.4%
参考答案:A
丙纶线绳制的渔网
When the wave period and the apparent rolling period are the same().
A.synchronous rolling occurs
B.roll period decreases
C.roll period increases
D.roll amplitude is dampened