【多选题】关于满族服饰描述正确的是( )
D.
满族妇女头上装饰品多用玛瑙、珍珠、宝石、金银制成。
【简答题】(选修4—5:不等式选讲)设函数 。 (1)当a=-5时,求函数 的定义域。 (2)若函数 的定义域为R,求实数a的取值范围。
【判断题】作为当代的中国人,我们每一个大学生都应该努力提高自己的国际化素养,践行习近平总书记“命运共同体”理念,力争成为连接中国和世界的桥梁。
【单选题】Questions 13 to 15 are based on the passage you have just heard.
A.
Salt is quite necessary for people’s health.
B.
Eating too much salt could do harm to the heart.
C.
The quantity of salt varies among different people.
D.
13.People are launching a campaign to eat less salt.
【单选题】passage two questions 13 to 15 are based on the passage you have just heard. 13
A.
salt is quite necessary for people's health
B.
eating too much salt could do harm to the heart
C.
the quantity of salt varies among different people
D.
people are launching a campaign to eat less salt
【多选题】执行航班任务时,除乘务员需携带的装具外,乘务长还应携带() .
【简答题】(10分)选修4-5;不等式选讲. 设函数 . (1) 当 时,求函数 的定义域; (2) 若函数 的定义域为 ,试求 的取值范围.
【单选题】Eating too much fat can _____ heart disease and cause high blood pressure.