【单选题】

根据现行国家标准《地铁设计防火标准》,地铁车站发生火灾时,应保证在最大客流量时一列进站列车所载乘客及站台上的候车乘客能在(   )内全部撤离站台。

A.
6min
B.
5min
C.
4min
D.
3min
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参考答案
参考解析
【单选题】

G蛋白结合GDP后

A.
使α亚基与效应蛋白解离
B.
具蛋白激酶A活性
C.
具蛋白激酶C活性
D.
具酪氨酸蛋白激酶活性
E.
可激活腺苷酸环化酶
【单选题】

销售促进的方式包括专有利益、配套服务和促销策略联盟等。其中,促销策略联盟越来越受到重视。(  )

A.
B.
【单选题】

Passage 1    A lyric is a subjective poem of intense personal emotion whose principal quality is its musical form. Poe, master of the lyric, was led to explain all poetry as the thythmical creation of beauty in words. Because great poetry is often pure music, haunting melody, and chiming syllables, the reader should not glance through poetry as he read his newspaper or the latest magazine-skipping a word here and a line there, and still hope to get what the author had intended for him. Poetry being music, like all other forms of music, it gains its meaning when interpreted by the human voice.    It is the special function of lyrical poetry to give pleasure through this musical quality no less than through fine contemplation of beauty it inspires-beauty of thought, of feeling, of expression, and of technical skill. But poetry is more than a great pleasure. It should also be an outlet for our own unspoken thoughts and our varied moods. It makes our choked-up passageways of speech, giving adequate expression to our pent-up loves and joys and glories, and fumishes release and relief to our fears, grieves and sorrows. A great poet takes our half-formed thoughts, or suppressed moods, our crushed desires, and needs, and leads them out into the open, endowing them with a harmony, and completeness ...    Great verse can help to vitalize our thinking about the commonplace and elemental in life, and can idealize and give meaning to the simplest things in creation. Listen to Tennyson:    Flower in the crannied wall,    I pluck you out of the crannies,    I hold you here, root and all, in my hand,    Little flower-but if I could understand,    What you are, root and all, and all in all,    I should know what God and man is.
According to the author, a great poet is one who ______ .

A.
gives meaning to readers' life
B.
makes readers blessed with wisdom
C.
puts readers in a peaceful state of mind
D.
enables readers to have a sense of belonging
【单选题】

电气装置安装完毕进行通电检查试验,首先要进行的是(    )通电检查试验。

A.
直流耐压
B.
交流耐压
C.
一次回路
D.
二次回路
【A1型选择题】

能强烈抑制胃酸分泌又能提高抗生素对幽门螺杆菌疗效的药物是(    )。

A.

氢氧化铝凝胶

B.

硫酸镁

C.

奥美拉唑

D.

西咪替丁

E.

枸橼酸铋钾

【单选题】

患者2个月前患悬饮,经积极治疗,饮邪已退,病情好转。现仍胸胁灼痛,呼吸不畅,闷咳,天阴时明显,舌暗苔薄,脉弦。治疗应首选

A.
柴胡疏肝散
B.
柴枳半夏汤
C.
小柴胡汤
D.
香附旋覆花汤
E.
瓜蒌薤白白酒汤
【单选题】

钢筋配料时,弯起钢筋(不含搭接)的下料长度是()。

A.
直段长度+弯钩增加长度
B.
直段长度+斜段长度+弯钩增加长度
C.
直段长度+斜段长度-弯曲调整值+弯钩增加长度
D.
直段长度+斜段长度+弯曲调整值+弯钩增加长度
【单选题】

在国别风险的主要类型中,(  )是最主要的类型之一。

A.
主权风险
B.
政治风险
C.
传染风险
D.
转移风险
【单选题】

广播电视中心场地环境噪声各测量频率声压级的平均值均宜低于(    )dB。

A.
80
B.
70
C.
60
D.
55
【单选题】

治疗胃痞肝胃不和证,应首选

A.
保和丸
B.
柴胡疏肝散
C.
枳实导滞丸
D.
二陈平胃散
E.
越鞠丸合枳术丸