下列传动方式中,适用速度范围最广的是()
A.带传动
B.链传动
C.齿轮传动
D.蜗杆传动
参考答案:C
Eric had received training in computer for one year _______ he found a job in a big company.
A.before
B.after
C.since
D.as
完善的公司法人治理结构可以实现依法最大限度地保护公司股东权益。( )