| Music comes in many forms; most
countries have a style of their own. {{U}} (56) {{/U}} the mm of the
century when jazz was born, America had no prominent {{U}} (57) {{/U}} of
its own. No one knows exactly when jazz was {{U}} (58) {{/U}} , or by
whom. But it began to be {{U}} (59) {{/U}} in the early 1900s. Jazz is
America’s contribution to {{U}} (60) {{/U}} music．In contrast to
classical music, which {{U}} (61) {{/U}} formal European traditions, jazz
is spontaneous and free in form. It bubbles with energy, {{U}} (62)
{{/U}} the moods, interests, and emotions of the people. In the 1920s jazz
{{U}} (63) {{/U}} like America, and {{U}} (64) {{/U}} it does to
day. The {{U}} (65) {{/U}} of this music are as interesting as the music
{{U}} (66) {{/U}}. American negroes, or blacks, as they are called today,
were the jazz {{U}} (67) {{/U}}. The A. demonstration B. procession C. body D. march [判断题]发电机组应配置可用于扑灭电气火灾的灭火器，禁止存放易燃易爆物品。（ ）
A.正确 B.错误 [单选题]调车人员在车上观速时，看石碴形状成一条线时，约( )km/h以上。
A.25 B.17 C.15 D.20 [单选题]工作台导轨间的间隙，在调整时，一般以不大于()㎜为宜。
A.0.01 B.0.04 C.0.1 D.0.3 [判断题]用人单位应当为从业人员建立职业健康监护档案，并按照规定的期限妥善保存,从业人员离开煤矿企业时，无权索取本人职业健康档案。
A.正确 B.错误 [单选题]《高速铁路有砟轨道线路维修规则》规定：有砟道床应采用特级碎石道砟，其材质应符合相关标准要求，并应经（ ）。
A.分类 B.打磨 C.水洗 D.湿润 [单选题]处方中缩写含义不正确的
A.每日，qd B.每日4次，qid C.每4小时，q4h D.隔日1次，qnd E.每晚，qn [单项选择]小儿喉部特点下列哪项是不恰当的（）
A. 喉腔较窄 B. 声门裂狭窄 C. 软骨柔软 D. 黏膜柔嫩富有血管 E. 淋巴组织较少 [单项选择]在皮带运输机安装中，滚筒轴线的水平度偏差要求为偏差不应大于( )。
A. 2/1000 B. 1/1000 C. 2mm D. 1mm [多选题]多选题：下列选项中不属于电话闭塞行车法中路票信息的是（ ）。
A.电话记录号 B.车站编号 C.道岔编号 D.车站章 [判断题] 在合并单元处于守时状态时,连续接收到10个与合并单元时间差大 于10gs有效时钟授时信号时进入失步状态,清除同步标志。
A.正确 B.错误 我来回答: 提交
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