Children have a natural ________ about the world around them.
A. certainty
B. capability
C. cleverness
D. curiosity
查看答案
酸洗槽与槽之间用（）辊分开
A. 张力辊
B. 挤干辊
C. 拉矫机辊
D. 转向辊
下面那种缺陷不是板形缺陷（）
A. 中浪
B. 双边浪
C. 欠酸洗
D. 翘曲
Country life is better than city life ________ it offers fresh air and noiseless environment
A. in that
B. as that
C. as for
D. in which
酸液与氧化铁皮发生化学反应包括（）
A. 溶解、剥离和氧化
B. 剥离和氧化
C. 溶解、剥离和还原
D. 溶解 和还原
微信支付 
支付宝支付