【简答题】传热的基本方式为 ________.________._______ 。其中, 可以在真空中传热的方式是 ________。
【单选题】For any 3 given numbers, which of the following is always equivalent to adding the 3 numbers together and then dividing the sum by 3? Ⅰ. Ordering the 3 numbers numerically, from highest to lowest, and...
【单选题】In the first paragraph, “we are always mindful of...” means “________.”
A.
we are always worried about…
B.
we always look forward to…
C.
we are always aware of…
D.
we always put up with…
【单选题】冻干机中把冻干箱内产品升华出来的水蒸气冻结吸附在其金属表面上的部件是