A. 5点钟和7点钟位 B. 12点钟和6点钟位 C. 3点钟和9点钟位
A. one thousandth (10 to the -3rd power) B. one millionth ( 10 to the -6th power) C. one billionth ( 10 to the -9th power) D. one trillionth (10 to the -12th power)
A. 单瘫 B. 下肢瘫 C. 截瘫 D. 偏瘫
A. 织物久晒就会变黄 B. 很容易变形,耐磨性差 C. 光滑、柔软、富有弹性,其吸湿性、透气性以及染色性均优于纯棉面料 D. 是一种高湿模量粘胶纤维的纤维素再生纤维