单项选择题
A.Heat is always transferred at a constant rate
B.Heat transfer rate increases as temperature difference increases
C.The rate of heat transfer is not affected by temperature difference
D.The high temperature region is known as a heat sink
单项选择题 Which of the following operations must be entered on the Oil Record Book Part Ⅰ? （） Ⅰ.Routine discharge at sea of bilge water containing oil from the machinery spaces Ⅱ.Bunkering of fuel oil
单项选择题 The （）is used to measure power.
单项选择题 If you burned your arm on a bare steam line, the most effective immediate treatment would be to（）