塔设备是进行蒸馏、吸收、萃取等传质过程的最主要设备。
参考答案：对
Puncture leaks in the lower tubes or bottom of an inflatable liferaft should FIRST be stopped by using（）.
A.sealing clamps
B.repair tape
C.a tube patch
D.sail twine and vulcanizing kit
三原色中绿的互补色是（）
A.黄
B.晶红
C.青
D.白
