变电检测管理规定中,仪器仪表管理的配置原则包括:采购的仪器产品在投入使用前,应进行(),检测结果应符合产品订货技术条件
A.验货
B.交接试验
C.到货检测
D.现场试用
参考答案:C
(2013·亳州模拟) difficult and challenging the task may be, we must finish it on time, because there is a possibility we’ll be fired if we can’t fulfill the task on time.
A.Whatever; that
B.However; that
C.Whatever; which
D.However; as
如图所示,在通电长直导线AB的一侧悬挂一闭合矩形金属线圈P,AB在线圈平面内.当AB中通以向上的电流并增大时( )
A.线圈中产生逆时针方向的电流,线圈向AB运动
B.线圈中产生逆时针方向的电流,线圈离开AB运动
C.线圈中产生顺时针方向的电流,线圈向AB运动
D.线圈中产生顺时针方向的电流,线圈离开AB运动