集尘系统的设计排放标准为不超过（） ["30mg\/Nm3<\/sup>","40mg\/Nm3<\/sup>","50mg\/Nm3<\/sup>","60mg\/Nm3<\/sup>"]
The distance between any two meridians measured along a parallel of latitude （）. ["increases in north latitude and decreases in south latitude","decreases as DLO increases","increases with increased latitude","decreases with increased latitude"]
中国创业板市场的特点有（） ["上市标准宽松","信息披露完善","对风险揭示要求较高","退市严格"]
凭证式国债超过发售起点的，按（）的整数倍发售。 ["佰元","仟元","万元"]
电脑系统的显示系统包括显卡和（）。 ["显存","3D图形加速卡","显示器","主板"]
简述海底扩张学说的基本观点和证据
