【多选题】汤敏仪 第三节 20.下列朝代中,()修筑过长城。
【单选题】Traditionalists believe that social promotion
A.
can avoid damaging the pupil's self-esteem
B.
proves to be a woeful failure
C.
should be abolished right now
D.
can help backward pupils to catch up
【单选题】In the park , the number of the visitors is tightly ____ to avoid damaging the environment or putting stress on the animals.
【多选题】物流需求预测要遵循的原理,下列说法正确的是
A.
任何预测方法和模型得到的预测值与实际值之间一定存在误差。但是要尽量选择误差小的预测方法和模型
B.
预测方法模型选用之后,一定要进行预测精确度的检验,若精确度达不到期望,则要更换预测方法或模型。
C.
预测对象不是一个孤立存在的要素,与一些要素之间存在或弱或强的关联。因此,要尽量寻找预测而对象与其他相关要素之间的关系规律,利用这种相互影响的规律,可以预测观测对象未来的变化趋势
D.
类推原理可以在数据具备或数据不具备的情况下,借用相近似的对象的变化特征,来推断预预测对象未来的变化趋势。
【单选题】When weighing anchor in a rough sea,how would you avoid risk of damaging the bow plating ________.
A.
Heave it home as fast as you can
B.
Heave it home intermittently,between swells
C.
Leave the anchor under foot,until the vessel may be brought before the sea
D.
Wait for a calm spot between seas,then house it
【单选题】In the park, the number of visitors is tightly ____ to avoid damaging the environment or putting stress on the animals.
【单选题】To avoid damaging the components of a printed circuit board when testing it with a DC volt-ohmmeter, you should .
B.
avoid reversing the polarity of the leads
C.
isolate sensitive components with heat sinks
【单选题】患者女性,45岁,因为严重营养不良伴胃肠功能障碍,需要长期肠外营养支持,应选择的穿刺血管是
【单选题】下图为核苷酸的模式图,下列相关说法正确的是
A.
DNA与RNA在核苷酸上的不同之处表现在①和②两方面上
【判断题】分类导航可以帮助人们缩小搜索范围,但是不能从根本上解决信息过载的问题。