【单选题】When will college students curb their spending and only buy what is necessary?
A.
After they have lived on campus for a relatively long time.
B.
When they have got used to living according to their money-spending plan.
C.
After they have had roommates to share furnishing or grocery expenses with them.
D.
When they have known that their hard- earned money shouldn’t go to movies.
【单选题】()的门应是无孔的,货梯或汽车梯可用交栅门等有孔的门。
【单选题】Who can be greeted by using“Haven’t seen you for ages”?
【简答题】在测定弱电解质电离常数的实验中,电极不用时,应将其浸入 中。
【判断题】装有进路表示器的出站信号机,当表示器不良时,由车站发车人员口头通知司机后,列车可凭出站信号机的显示出发。
【单选题】Who can be greeted by using "Haven't seen you for ages"?
【单选题】拉梯又称()、分二节拉梯和三节拉梯两种类 。