为保证钢丝绳正常使用寿命，滑轮直径D≤ed。（）
参考答案：错
A poem written by an American poet is usually harder to understand than ________ by a Chinese poet. [ ]
A. that
B. it
C. which
D. one
中国农业发展银行的主要资金来源是( )。
A．吸收公众存款
B．财政拨款
C．总付拨付营运资金
D．中国人民银行的再贷款
