【多选题】What are John's prblems?
A.
John has a quarrel with his roommates
B.
John can not sleep well at night.
C.
John does not like doing sports
D.
John cannot focus on his studies.
【单选题】----Why were so many people trapped into buying the stock of the company? ----______enough money within one night .
【判断题】用压力法测量一开口容器的液位,其液位的高低取决于取压点的位置和介质密度。()
【判断题】切削液清洗作用的大小主要取决于切削液的渗透性、流动性和使用压力等。( )
【单选题】当差压法测量容器液位时,液位的高低取决于()。
【简答题】、 、 是现代形态构成学的三个主要组成部分。
【单选题】用差压法测量容器液位时,液位的高低取决于( )。