【单选题】Once he has ______ nothing can change his mind. [ ]
【简答题】And it is imagined by many that the operations of the common mind can by no means be compared with these processes, and that they have to be required by a sort of special training.
【单选题】Once he ______ his mind, nothing can be done to ________ his mind.
【单选题】下列说法错误的是()
A.
利用较长的延展线或脱下的衬纬纱,或脱下的线圈在织物上形成毛圈表面,称为毛圈经编组织。
B.
经编毛圈织物柔软,手感丰满、吸湿性好,在服装用及装饰用品领域应用广泛。
【单选题】图示构架中,各杆的自重不计。则( )杆为二力杆。