北电OMC-R告警窗口中红色表示的告警级别为（）。 A.紧要告警 B.重要告警 C.

下列选项中属于导体的是

A．人体、大地、金属、石墨

B．石墨、人体、塑料尺

C．陶瓷、盐水、油

D．盐水、大地、橡胶

证券交易所的职责包括（）。

A.证券交易所应当与上市公司订立上市协议，以确定相互间的权利义务关系

B.应当建立上市推荐人制度，保证上市公司符合上市要求

C.证券交易所应当监督上市推荐人切实履行业务规则中规定的相关职责

D.上市推荐人不按规定履行职责的，证券交易所有权根据业务规则的规定，对上市推荐人予以处分

仪器设备经过检定、校准、验证后，贴停用证的是指______。

A．检验仪器设备损坏者

B．降级使用者

C．检测仪器设备性能无法使用者

D．检测仪器设备超过检定周期者

1) ______ linguistic competence and linguistic performance
2) ______ assimilation and accommodation
3) ______ the language acquisition device (LAD)
4) ______ communicative competence
5) ______ the input hypothesis
a) The former is the process by which incoming information is changed or modified in our minds so that we can fit it in with what we already know; while the latter is the process by which we modify what we already know to take into account new information.
b) The former refers to knowledge of grammatical rules of language; whale the latter refers to application of language.
c) The ability not only to apply the grammatical rules of a language in order to form grammatically correct sentences but also to know when and where to use these sentences and to whom.
d) A sort of mechanism or device which contains the capacity to acquire one’s first language.
e) It assumes that humans acquire language in only one way--by understanding messages, or by receiving "comprehensible input".

船舶在航行中，驾驶员必须对海图作业坚持始终。