【多选题】动磁式电流表如图。 导电板固定在绝缘底板上,两端连着接线柱,中间装有( ),指针和( )的针轴安装在导电板上。
【单选题】SE序列中下列哪项参数能够提高图像信噪比
【简答题】已知Rt△ABC中,CD⊥AB于D,且AD=3,AC=6.则AB=______.
【简答题】如图,在 中, ,在 边上取一点 ,使 ,过 作 交AC于E,AC=8,BC=6.求DE的长.
【单选题】In a listening activity, students are asked to note down the time and places of events. The aim of this activity is to develop the skill of _________ . (2014-03)
A.
listening for the gist
B.
listening for specific information
C.
listening for structure
D.
listening for vocabulary