国际电工委员会规定，真实声束声强lob对于胎儿为（） A: lob＞20mW/cm2 B: lob＜20mW/cm2 C: lob＞100mW/cm2 D: lob＜100mW/cm2 E: lob＞190mW/cm2

国际电工委员会规定，真实声束声强lob对于胎儿为（）。 A: lob＞20mW/cm² B: lob＜20mW/cm² C: lob＞100mW/cm² D: lob＜100mW/cm² E: lob＞190mW/cm²

There are two softball leagues in our town, the fast-pitch league and the lob-pitch league.

If we all ____ , we should get the job finished this afternoon. A: pitch in B: pitch for C: pitch up D: pitch on

If we all _____, we will have the music album published in no time. A: pitch in B: pitch on C: pitch up D: pitch down

螺旋扫描中，会造成漏扫的螺距值是( ) A: Pitch= B: Pitch=0.5 C: Pitch=1.5 D: Pitch=0.8 E: Pitch=0.7

螺旋扫描中，会造成漏扫的螺距值是 A: pitch=1 B: pitch=0.5 C: pitch=1.5 D: pitch=0.8 E: pitch=0.7

lob用来定义多媒体数据类型

某些数据库系统提供LOB属性类型，下列说法不正确的是（） A: LOB字段存储的是指向实际数据的指针 B: 实际数据一定存储在文件系统中 C: LOB的意思是大对象块 D: LOB属性适用于图像、动画等媒体数据

中国大学MOOC: The __________ involves a pitch movement that first falls from a high pitch to a low pitch and then rises, ending on a mid pitch. This is the default type.