| It has been necessary to refer
repeatedly to the effects of the two world wars in promoting all kinds of
innovation. It should be{{U}} (21) {{/U}}also that technological
innovations have{{U}} (22) {{/U}}the character of war itself by{{U}}
(23) {{/U}}of new mechanical and chemical devices. One weapon
developed during World War Ⅱ{{U}} (24) {{/U}}a special mention. The{{U}}
(25) {{/U}}of rocket propulsion was well known earlier, and Us
possibilities as a{{U}} (26) {{/U}}of achieving speeds sufficient to
escape from the Earth’ s gravitational pull had been{{U}} (27) {{/U}}by
the Russian and the American scientists. The latter built experimental liquid-fuelled rockets in 1926.{{U}} (28) {{/U}}, a group of German and Romanian pioneers was working{{U}} (29) {{/U}}the same lines, and in the 1930s, it was tins team that developed a A. methods B. means C. techniques D. medium [单项选择]
M: What’s the matter with you A. She had a high fever. B. She was in good health. C. She has caught a cold. D. There is something wrong with her heart and lungs. [单选题]单线半自动闭塞区间,出站信号机的开放受( )控制。
A.信号按钮 B.列车进路 C.联锁设备 D.闭塞机 [多选题]智能变电站中电网电流电压量采集、计算、传输经过的装置有( )。
A.合并单元 B.测控装置 C.数据通信网关机 D.智能终端 [单选题]分电器断电器触点间隙过小,会造成( )。
A.点火提前角过大 B.点火提前角过小 C.怠速不稳定 D.尾气超标 [单选题]内勤行长工作变动的，应办理交接手续，由委派行______和所在网点指定双人共同监督交接。
A.运营管理部 B.风险管理部 C.安全保卫部 D.内控与合规监督部 [单项选择]作为汽车元年是哪一年？（）
A. 1886年 B. 1885年 C. 1900年 [填空题]一个理想变压器一次绕组的输入电压是220V，二次绕组的输出电压为20V。如果二次绕组增加100匝后，输出电压就增加到25V，由此可知一次绕组的匝数是（）。
[多选题]下列选项中，属于供用电合同条款的有()。( )
A.供电方式、供电质量、供电电压和供电时间 B.用电容量和供电地址、用电性质 C.计量方式和电价、电费结算方式 D.供用电设施维护责任的划分 我来回答: 提交
|
