Official 12 Lec 4
答题结果:0/6
答题时间:0''
Question 4 of 6
What is the difference between passive and active heating systems?

A.

Passive systems are less reliable

B.

Passive systems are difficult to install

C.

Passive systems can be used at any location

D.

Passive systems work without mechanical support

我的答案:

正确答案:D

00:00
00:00
隐藏原文

译文