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【单选题】
等直杆的受力情况如图所示，则杆内最大轴力Nmax和最力Nmin分别为( )。A.
Nmax=60kM、Nmin=15kN
B.
Nmax=60kM、Nmin=-15kN
C.
Nmax=30kM、Nmin=-30kN
D.
Nmax=90kM、Nmin=-60kN
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【单选题】根据《多边投资担保机构公约》设立的多边投资担保机构（）。
A.
在法律上具有独立性，在财务上没有独立性
B.
在法律上和财务上都具有独立性
C.
在法律上没有独立性，在财务上具有独立性
D.
在法律上和财务上都没有独立性
【单选题】Her uncle _____ to the factory. He'll be back _____ an hour. [ ]
A.
has gone, after
B.
has been, in
C.
has gone, in
D.
has been, after
【单选题】AERONAUTIC SYSTEMS, INC., the Berlin-based company also known as AeroSys, has made an agreement with three of the world's major international airlines to provide a satellite system for voice and data ...
A.
In London
B.
In New York
C.
In Berlin
D.
In Tokyo
【单选题】From the passage we know that Symbion Inc. ______.
A.
has been banned by the government from producing artificial hearts
B.
will review the effects of artificial hearts before designing new models
C.
may continue to work on new models of reliable artificial hearts
D.
can make new models of artificial hearts available on the market in 10 to 20 years
【简答题】会计核算的最终环节是（ ）
【单选题】---Is your father at home? ----No, he ________the USA. A. has been to
B.
has been in
C.
has gone to
D.
went to
【简答题】渗漉法优点的叙述,正确的是 A 、有良好的浓度梯度 B 、溶媒的用量较浸渍法少 C 、操作比浸渍法简单易行 D 、浸出效果较浸渍法好
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