Chemicals in laboratory must be labeled with their names to avoid misuse.
A: 正确
B: 错误
A: 正确
B: 错误
举一反三
- To avoid bias in the laboratory, the samples were ______ with numbers rather than names of individuals. A: transformed B: coded C: programed D: decoded
- To avoid stereotyping, one must avoid overgeneralizing.
- The construction of the laboratory ________ by the end of July. A: must be completing B: must complete C: must have complete D: must have been completed
- The construction of the laboratory ______ before the end of next month. A: must complete B: must be completed C: must have completed D: must have been completed
- You are under sail and overtaking a tug and tow.Which action is correct（）. A: The power-driven tug must maneuver to avoid collision B: You must maneuver to avoid the tug and tow C: You must maneuver to avoid collision only if the tug is to leeward and the wind is on your port side D: Both vessels are required to maneuver to avoid collisio