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【简答题】
作业要求: (1)依据轴测图,绘制三视图草图 (2)由三视图大小,合理选择图幅、比例 (3)使用绘图工具绘制三视图,标注尺寸,图面整洁
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举一反三
【单选题】There＇s no right amount of sleep for everyone，and generally sleep requirements decrease with age．
A.
每个人都没有恰当的睡眠量，一般来说，睡眠需求会随着年龄增长而减少。
B.
每个人所需的睡眠时间不尽相同，一般是随着年龄的增长而减少。
C.
睡眠不足者需求的睡眠量一般都随着年龄而减少。
D.
一个人没有固定的睡眠时间，一般会缩短寿命。
【单选题】We all know that the normal human daily cycle of some 7-8 hours sleep alternating(交替) with some 16-17 hours walness and that, broadly speaking, the sleep normally happens in the same period with t...
A.
Bonjer's findings are different from Brown's.
B.
sleep normally coincides with the hours of darkness.
C.
some people can change their sleeping habits easily.
D.
shift work in industry requires people to change the sleeping habits.
【单选题】If I knew the answers to all your questions, I ____ a genius!
A.
am
B.
would have been
C.
would be
D.
were
【简答题】企业薪酬管理的原则将主要以员工的（ ）决定其薪酬。
【单选题】根据以下材料，回答题 More Than 8 Hours' Sleep Although the ers of too little sleep are widely known， new research suggests that people who sleep too much may also suffer the consequences. Investigators at t...
A.
Kripke's research tool
B.
ers of habitual shortages of sleep
C.
Criticism on Kripke's report
D.
A way of overcoming insomnia
E.
Sleep problems of long and short sleepers
F.
Classification of sleep problems
【单选题】The main idea of this passage is ______.
A.
why Japanese have sleep problems
B.
how to deal with sleep problems
C.
that many Japanese sleep poorly
D.
how to sleep well
【简答题】在如图所示电路中,已知电网电压波动范围为± 10 %,当电网电压为 220V 时,变压器次级电压有效值为 U 2 。 选择一个正确答案填入空内。 1 .整流滤波后的电压平均值 __ 。 A 、 = U 2 B 、≈ 1.2 U 2 C 、 ≈ 0.9 U 2 2 .整流二极管所承受的最大反向电压 。 A 、 =1.1 U 2 B 、 = U 2 C 、 =2 U 2 3 .整流二极管流过的电流平均...
【单选题】I'm terrified _____ the dark. I go to sleep _____ my bedroom light _____. [ ]
A.
of, on, on
B.
of, with, on
C.
with, with, on
D.
with, on, on
【单选题】—Are you afraid of the dark? —Me? Oh, yes! I usually go to sleep _____ my bedroom light on. [ ]
A.
with
B.
in
C.
on
D.
at
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