A、Sea Garden
B、Hymen
C、Collected Poems (1925)
D、Helen in Egypt (1961)
第2题
在自动车床上车削一批小轴,尺寸要求为mm。加工后尺寸呈正态分布,σ=0.02mm,尺寸分布中心偏小于公差带中心0.03mm。试计算该批小轴的废品率,并分析废品率原因。计算中有关数据可查表。
F(z)数值表 | |||||||
z | 0.5 | 1.0 | 1.5 | 2.0 | 2.5 | 3.0 | 4.5 |
F(z) | 0 1915 | 0.3413 | 0.4332 | 0.4772 | 0.4938 | 0.4987 | 0.5 |
第3题
A.建议F1/F2要求两个载波总功率功率、PA/PB设置一致,保持覆盖范围一致
B.针对F20M+10M双载波,移动性方面尽量不让UE重选或切换到F2,F2的话务吸收靠F1频段盲切到F2,避免对ATU测试的影响
C.非双载波小区间(比如邻站或共站不同覆盖方向)允许F2切换和重选到F1上,不允许F1切换和重选到F2上
D.2频点(1905~1915)引入前需要对现网TDS占用的F频段进行退网清频
第4题
A.has witnessed
B.was witnessed
C.witnessed
D.is witnessed
第5题
A) has witnessed
B) was witnessed
C) witnessed
D) is witnessed
第7题
E-commerce has witnessed a_______growth these years.
A.fixed
B.stable
C.steady
D.regular
第8题
The last half of the 19th century ______ the steady improvement in the means of travel.
A.witnessed
B.has witnessed
C.is witnessed
D.was witnessed
第9题
A.have witnessed
B.was witnessed
C.witnessed
D.is witnessed
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