单项选择题
In grammar practice, substitution and______ drills are ...
未知题型In grammar practice, substitution and______ drills are most frequently used in mechanical practic。
船舶推进系数是(),其值一般在()之间。 A. 机器功率与收到功率之比...
单项选择题船舶推进系数是(),其值一般在()之间。 A. 机器功率与收到功率之比;0.95~0.98 B. 收到功率与有效功率之比;0.80~0.95 C. 有效功率与收到功率之比;0.6.~0.75 D. 有效功率与主机机器功率之比0.50~0.70
Which of the following is an example of teachers&39; in...
未知题型Which of the following is an example of teachers&39; indirect corrective feedback?A.Say &q