单项选择题 If there were a fire in the bunker tanks, you would（）

单项选择题 Any friction fit, tightness or adhesion of the part of any load being lifted should be broken by wedge or tapping and not by increasing the load on the applianceAccording to this sentence, （）

单项选择题 In order to remove the carbon deposit from the threaded recess, we can use（）