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【单选题】
It is a bad practice to( ).A.
grow the same crop in a field year after year
B.
grow different crops in the same field year after year
C.
grow the crops with the same kind of fertilizers year after year
D.
grow the crops with different kinds of fertilizers year after year
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【简答题】某校科技活动小组用镁粉、盐酸、醋酸及设计的右图装置（夹持固定装置已略去），对两种酸分别与镁反应的速率以及是否存在电离平衡进行探究． （1）组装完成后，某同学发现该装置在设计上存在明显缺陷：根本无法完成实验，甚至存在危险，其缺陷在于______，其改进方法是______． （2）改进装置后，检查一侧装置的气密性的方法是______． （3）欲配制100mL实验所需浓度的盐酸，除50mL量筒、烧杯、酸...
【单选题】The “repeatable” level of CMM (Level 2 ) means that:
A.
both management and engineering processes are codified and followed
B.
metrics are used to control the process
C.
continuous process improvement is in place
D.
none of the above
【简答题】The (1) program means a program written in a high-level language. It is generally translated to an (2) program, which is in aform directly understandably by the computer. The translation is usually do...
【简答题】指出下列句中加点词的活用情况并解释。 5. 王无罪岁() ___罪_________________________________
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