栉毛板(游泳板)
参考答案:
在钵水母类,体表一般具有8行纵列,每块栉毛板是由长而粗的纤毛愈合而成,生活时靠栉毛摆动使个体运动。
从方框中选出填在句中空白处的最佳选项,其中有2项为多余选项。
(共5小题;每小题2分,满分10分)
A: Where are you going for your holiday this year, Wu Dong?
B: 61
A: How are you going to get there?
B: We are going to get there by air.
A: 62
B: We are leaving the day after tomorrow.
A: 63
B: Thank you. 64
A: In the countryside. I’ll never forget the place where I was born. I’d like to see all the people there. I miss them very much.
B: 65 I think you must have a good time in your hometown.
被动式隔爆棚的设置方式有岩粉棚、水袋棚、( )。
A.防尘棚
B.水槽棚
C.石灰粉棚
D.煤粉棚