【单选题】“ 玉屑似的雪末儿随风飘扬 ”中“似”的声母为( )音。
【单选题】患者男,48岁。脑外伤,在全麻下行颅探查术。术后的床单位应是
【判断题】网上购物一般是指通过互联网或移动互联网的购物行为。
【简答题】A.unlimited B.specific C.definite D.finite
【单选题】Which of the statement is true about estimating with finite sums?
A.
Finite sums have finite many terms.
B.
The finite sum method is a precise estimation.
C.
The circumference of a circle is smaller than the sum of bottoms of the triangles from an inscribed polygon.
D.
Every term in a finite sum is positive.
【单选题】检查罐头食品的真空度经常可以用( )检验