【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】They're making efforts to ( )their normally cumbersome bureaucracy.
【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。
【单选题】下列异构体中,能进行SN2反应,而无E2反应的是( )。