【多选题】(多选)如下各种说法中,哪几项是正确的?()*
A.
离心分离因数可以表示离心分离设备的分离能力或效率
B.
离心分离因数是流体的圆周运动速度与直线运动速度之比
C.
离心分离因数是离心沉降速度与重力沉降速度之比
【简答题】People consume more and more calories to make us feel that we are full at meals that are rich in______.
【单选题】Rich people consume a lot more ________ ( food, energy, water, and many other things).
【单选题】In Paragraph 8, "a system of piracy" refers indirectly to ___________.
A.
a series of unconventional ways in which food is produced
B.
a series of improper ways rich people consume food
C.
a series of factors that cause the increase of food prices
D.
a series of challenges that human beings face about food
【单选题】在 Excel 中,文本默认的对齐方式为()。
【单选题】对改革开放前的社会主义实践探索,要坚持( )的思想路线,分清主流和支流,坚持真理,修正错误,发扬经验,吸取教训,在这个基础上把党和人民事业继续推向前进。
【单选题】Rich people consume a lot more food, enengy,water,and many other things .