在冲泡茶的基本程序中,温壶 ( 杯)的目的是
A、主要是清洗茶具B
暂无解析
Shehadclearlyno________ofdoinganywork,althoughshewasverywellpaid.
Theproblem________whenthestudentsrefusedtodotheirhomework.
设函数f(x)=1-x^2在区间(,)
设A为3阶矩阵,|A|=3,*A为A伴随矩阵,若交换A的第1行与第2行得矩阵B,则|BA|=()
In1991,whilet11eeconomiesofindustrializedcountriesmetaneconomic_____,theeconomiesofdevelopingcountriesweregrowingveryfast.