According to the terms of Contract No. FA44, the shipment is to be effected_________ April 15.

a小调，D7——tsvl（跳进）时，可以mi #sol re mi进行到？ A: fa la dol la B: fa la dol fa C: fa fa dol la D: fa fa dol fa

《G大调音阶》中出现的Fa音是什么Fa？ A: 还原Fa B: 升Fa C: 降Fa D: 重升Fa

According to the terms of Contract No. FA44, the shipment is to be effected_________ April 15.‏​‏ A: before B: on C: during D: at

According to the terms of Contract No. FA44, the shipment is to be effected_________ April 15. A: before B: on C: during D: at

‏According to the terms of Contract No. FA44, the shipment is to be effected _________ April 15.‌ A: before B: on C: during D: at

图示结构中MA=___，MC=___。（设下侧受拉为正）。（）[img=528x435]180334be8a467c9.jpg[/img] A: Fa；Fa B: -Fa；-Fa C: Fa；-2Fa D: -2Fa；Fa

一对角接触球轴承( α=25°)反安装。已知：径向力FrⅠ=6750N，FrⅡ=5700N，外部轴向力FA=2000N，方向如图所示，两轴承的轴向力FaⅠ、FaⅡ分别为（ ）。 (注：内部轴向力Fs=0.68Fr) [img=305x140]1803782a38c6302.gif[/img] A: 由于轴承1压紧，FaⅠ=Fa+FsⅡ，FaⅡ= FsⅡ B: 由于轴承1压紧，FaⅠ= FsⅠ，FaⅡ= FsⅠ+Fa C: 由于轴承1压紧，FaⅠ= FsⅡ，FaⅡ= FsⅡ+Fa D: 由于轴承2压紧，FaⅠ= FsⅠ，FaⅡ= FsⅠ+Fa

脂肪的消化速度是短链FA＞中链FA＞不饱和长链FA＞饱和长链FA。

图示结构MDC(设下侧受拉为正)为() A: －Fa B: Fa C: －Fa／4 D: Fa／4