皮皮学，免费搜题
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【单选题】
Why good students are good students?A.
because they do homework
B.
because they work hard
C.
because they go group tutoring
D.
because they go to the study groups very early.
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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】Bilge soundings indicate ______.
A.
the amount of condensation in the hold
B.
whether the cargo is leaking or not
C.
whether the vessel is taking on water
D.
All of the above
【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
【多选题】关于交直交间接变频电路的说法中正确的是( )。
A.
在要求变频器输出电压可变，而逆变器又无控制电压能力的场合，常采用相控整流电路
B.
在要求变频器输出电压可变，而逆变器又无控制电压能力的场合，常采用不控整流电路
C.
在逆变电路能够控制输出电压的场合，一般采用相控整流电路以降低成本
D.
在逆变电路能够控制输出电压的场合，一般采用不控整流电路以降低成本
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