【单选题】It may be inferred from the passage that ______.
A.
bacteria can be most easily killed by removal of moisture
B.
drying out a house will eliminate the risk of airborne infection
C.
hot-air heating is better than steam heating because steam heating uses water
【单选题】若有5个元素的出栈序列为1,2,3,4,5,则进栈的顺序可能是 。(提示:中间可以有弹栈操作)
【单选题】It may be inferred from the passage that ______.
A.
bacteria can be most easily killed by removal of moisture
B.
drying out a house will eliminate the risk of airborne infection
C.
hot-Mr heating is better than steam heating because steam heating uses water
【简答题】有一位游客容易发火,喜欢与人争论问题,精力充沛,如何接待这类旅游者?
【单选题】元素1,2, 3, 4,5依次进入初始为空的栈中,若进栈后可停留、可出栈,直到所有元素都出栈,则在所有可能的出栈序列中,以4开头的序列有( )个?
【判断题】施工时通常采用小样板来操平找正地脚螺栓。小样板是由一块比立柱模板上口对角线稍长一点的木板或钢板制成,宽度约20cm左右(视地脚螺栓而定),其厚度一般为3~4cm。
【简答题】( ) has a pH normally falling between 6.5 and 6.7, which is suitable for bacteria grow.