BJ9型手抬机动消防泵组的引水方式是利用废弃引水。
参考答案：错
As a writer _____ the new century, he is popular among the teenagers.
A．belongs
B．belongs to
C．belonging
D．belonging to
EDI主要应用于______类型的电子商务。
A．B2C
B．B2B
C．C2C
D．C2B
