【单选题】The police suspected that the fire must have broken after the workers had left the factory.
【简答题】The fire must have _____________after the staff had gone home. [A] broken down [B] broken up [C] broken out [D] broken off
【简答题】____场效应管也是一种由PN结组成的半导体器件,是电流控制器件,沟道越宽电流越大。
【简答题】The fire must have ( ) after the
staff had gone home.A. broken down B. broken through C. broken in D. broken out
【单选题】在山西有些地区,“伙计”是( )之间的相互称呼
【单选题】在山西有些地区, “伙计”是( )之间的相互称呼。
【单选题】促进橡胶产胶的植物生长调节剂的是 ( )
【单选题】在山西有些地区,“伙计”是( )之间的相互称呼
【单选题】ø60 H7 的孔与 ø60js6 的轴的结合是 配合;