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【简答题】
放大电路如下图所示，晶体管的β和r be 视为已知，各电容对交流信号均可视为短路。
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【单选题】If a ship will call at four ports for discharging, i.e.A.B.C and D consecutively, the cargo for ______ must generally be loaded first. A.Port A B.Port B
C.
Port C
D.
Port D
【简答题】八荣八耻的内容是什么？
【简答题】材料： During the morning of 2 August 1999 the supply vessel Putford Worker was working cargo at installations in the North Sea. She had completed operations at one installation without incident． At 1110...
【多选题】A — Packing Specification B — Packing Cost C — Keep Upright D — Radioactive E — Poison Gas F — Keep Dry G — This Side Up H — Inflammable Liquid I — Use No Hooks J — Keep Away from Cold K — Indicative ...
A.
E
B.
O
C.
J
D.
M
E.
D
F.
C
G.
F
H.
K
I.
I
J.
N
【单选题】Every new crude oil tanker of 20 000 tons deadweight and above shall be fitted with a cargo tank cleaning system using ______．
A.
Hot water
B.
Cold water
C.
Chemicals
D.
Crude oil washing
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