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【简答题】
单叶双曲面 的两族直母线方程为 与 , 过点P(6,2,8)的直母线方程为 与 .
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皮皮学刷刷变学霸
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【单选题】Their marketing policy for the product involves obtaining as much free publicity as possible.
A.
strategy
B.
research
C.
arrangement
D.
agreement
【简答题】The ______ way is based on the premise that the teacher should be silent as much as possible in the classroom and the learner should be encouraged to produce as much language as possible.
【单选题】The unfriendly feeling towards computers is developed from______.
A.
the possible widespread unemployment caused by their introduction
B.
their use as part of automated production systems
C.
the least possible number of operators
D.
the production system in steelworks
【多选题】下列有关“预收账款”科目的说法中，正确的是
A.
该科目的贷方登记已发生的预收账款数额和购货单位补付账款的数额
B.
该科目的借方登记向购货方发货后冲销的预收账款数额和退回购货方多付的数额
C.
期末贷方余额，反映企业预收的款项
D.
期末借方余额，反映企业尚未转销的款项
【单选题】Everyone knows that taxation is necessary in a modern state:【51】it, it would not be possible to pay the soldiers and policemen who【52】us 【53】the workers in government offices who look after our health...
A.
but for
B.
without
C.
because of
D.
instead of
【单选题】Financial support from both private organizations and the government has made possible____________
A.
they can find the best students
B.
the university’s academic advancement and physical extension
C.
some of the most distinguished scholars
D.
where a sports meet is held every year
E.
must have been the top student’s in their classes
F.
must be hardworking
【单选题】Which of the following is a healthy eating habit.
A.
Eating as little as possible.
B.
Eating no breakfast.
C.
Eating three regular meals a day.
D.
Eating no lunch.
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