卷扬机卷筒的中心至最近一个滑车的距离应大于卷筒长度的()倍。
A.10;
B.12;
C.15;
D.20
参考答案:D
驾驶时,应多用传动比()的档以便于改善燃油经济性。
91.You will find as you read fiats book that you just can’t keep some of these stones to ______. You will want to share them with a friend.
A.itself
B.yourself
C.himself
D.themselves