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【单选题】
集液器安装在A.
冷凝器和节流膨胀管
B.
冷凝器和恒温膨胀阀
C.
压缩机和冷凝器
D.
蒸发器和压缩机
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反馈参考答案：
举一反三
【单选题】We have instructed our bank to _ an L/C in you favor.
A.
establish
B.
draw
C.
do
D.
make
【单选题】We have instructed our bank to open the covering L/C ___ your favor.
A.
in
B.
to
C.
with
D.
of
【单选题】已知 313K 时,水的 K w,θ =3.8 × 10 -14 ,此时 c (H + )=1.0 × 10 -7 mol · L -1 的溶液是
A.
酸性
B.
中性
C.
碱性
D.
缓冲溶液
【简答题】污水处理技术按处理程度可划分为( )处理、( )处理和( )处理。
【单选题】We have instructed the Bank of China to a sight L/C in your favor.
A.
draw
B.
do
C.
make
D.
open
【单选题】We shall be grateful ___ you will keep the damage cases until called for by forwarding agent, ___ we have instructed accordingly.
A.
if, who
B.
that , who
C.
if, whom
D.
that , whom
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