【单选题】电感三点式正弦波振荡器属于( )振荡电路。
【单选题】When launching a lifeboat,the tricing pennants should be released().
A.
before the boat is lowered from the stowed position
B.
as the boat-fall blocks break clear of the davit head
C.
before the boat is lowered from the embarkation level
D.
after the boat is released into the water
【简答题】名片的标准尺寸为_____mm*______mm。特殊尺寸,可以在宽度上进行变化,最小的宽度不低于45mm。
【简答题】名片的标准尺寸为__________,特殊尺寸,可以在宽度上进行变化,最小的宽度不低于45mm。
【单选题】制作豆类面坯,煮豆时水应一次加足,万一中途需要加水,一定要加( )。