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【单选题】
On no account ______ to be exceeded.A.
the S.W.L of the crane are
B.
is the S.W.L of the crane
C.
are the S.W.L of the crane
D.
the S.W.L of the crane is
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皮皮学刷刷变学霸
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【简答题】天坛神乐署正殿名称是什么?其作用是什么?初建时为何名?屋顶为何形制?殿内悬有乾隆皇帝御笔书匾,其内容是什么?
【单选题】. Jack used to work in a garage for a full 10 years, so he fixed the broken engine ______ ease.
A.
in
B.
with
C.
on
D.
beyond
【单选题】Main propulsion engine lube oil sumps should be constructed _____.
A.
so as to never be integral lube
B.
with a sloped bottom
C.
only of nonferrous, noncorrosive metals
D.
with drain/return lines terminating just above or at the designed normal level
【单选题】关于DC提呈抗原的叙述,下列哪项是错误的?
A.
DC是重要的专职APC
B.
FDC滞留抗原-抗体复合物于细胞表面，有利于B淋巴细胞摄取抗原
C.
DC提呈外源性抗原能力强
D.
DC提呈内源性抗原能力强
E.
DC是激活初始T细胞最重要的APC
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