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【判断题】
长距离输油管道由输油站和线路(即管线)两大部分及辅助系统设施组成。A.
正确
B.
错误
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【简答题】Eight hours per day for sleep must be guaranteed.
【单选题】Eight hours per day for sleep must be guaranteed.
A.
每天八小时的睡眠必须被予以保证。
B.
必须保证每天八小时的睡眠。
【单选题】Joey cuts lawns during the summer. Let q equal the number of acres mowed per day, and let L equal the number of hours worked per day. Joey never works more than eight hours per day, and during that ti...
A.
Joey's marginal productivity equals his average productivity.
B.
Joey's marginal productivity diminishes by 0.2 for each additional hour worked.
C.
Joey's average productivity is constant.
D.
Joey's marginal productivity is constant.
【简答题】计算： （-317÷158+1÷365× ）×（2 +1- ）。
【简答题】找规律填空 （1）69+70+71=______×______=______； （2）361+362+363+3+365+366+367+368+369=365×______=______； （3）589+588+587+586+585+584+583=586×______=______．
【简答题】Eight hours per day for sleep must be guaranteed.
【单选题】该宾馆的纯收益计算应为( )。
A.
400×50×365×20％×(1-30％)
B.
400×50×365×(1-20％)
C.
400 ×50×365×(1-20％)×30％
D.
400×50×365×(1-20％)x(1-30％)
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