【单选题】带传动机构常见的损坏形式有轴颈弯曲、()、槽轮磨损带拉长或断裂、带轮崩裂等。
【单选题】带传动机构常见的损坏形式有 ,带轮孔与轴配合松动,槽轮磨损带拉长或断裂带轮崩裂等。
【单选题】Wal-Mart is now trading at a much lower price because______.
A.
it has stored a large quantity of goods
B.
it has become financially more powerful
C.
it has been eager to collect money to prevent bankruptcy
D.
it is a good way to compete with other retailing companies
【简答题】It was ____ (thought) of you to bring flowers.
【单选题】The term tariff, as used in international trade, refers to______.
A.
the limit on the quantity of a good that can be imported into a country
B.
the price of goods when they leave the producing country
C.
the government payment to encourage exports
【单选题】以下标记中,( )是用于设置页面元信息的标记。