If you get your bank to generate a money order, it usually ______ conversion fees.
A. charge
B. charges
C. charging
D. is charging
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电器着火时,下列不能用的灭火方法是哪种()
A. 用四氯化碳或 1211 灭火器灭火
B. 用沙土灭
C. 用水灭火
Excel Energy Corporation's new online training program has _______ (interact) features and forum discussions for trainees.
变形观测的正负号规定中,对水平位移 向()为正,()为正;反之为负。对竖向位移,()为正,()为负。对裂缝()为正,()为负
公众用户电报是用户利用装设在本单位办公室的用户电报专用终端设备,与本地或国内外各地用户之问直接通报的用户电报业务。()