【简答题】桥式起重机的主要技术参数有()、()、()、()、()、()。
【单选题】品牌是一个集合概念,若一个品牌已获得专用权并受法律保护,则指的是
【判断题】异步电动机的旋转方向是由旋转磁场的方向决定的,旋转磁场的方向是由通入电机定子绕组的电压的相序决定的。
【单选题】So involved in his business _________ that he can hardly accompany his wife and child at weekends. [ ]
A.
the manager has become
C.
has become the manager
D.
has the manager become
【简答题】桥式起重机的主要技术参数有()、()、()、()、()和()等六项。
【单选题】His heart was ______ so violently that he could hardly catch his breath.
【单选题】Greatly moved by her words, __________.
A.
tears came to his eyes
B.
he could hardly hold back his tears
C.
tears could hardly be held back
D.
his eyes were filled with tears