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【多选题】
流量控制阀在气动系统中通过改变阀的流通截面积来实现流量控制,以达到控制气缸运动速度或者控制换向阀的切换时间和气动信号的传递速度。 一般包括( )。A.
调速阀
B.
单向阀
C.
单向节流阀
D.
带消声器的排气节流阀
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举一反三
【简答题】Troy Corporation issued 50,000 shares of $1 par common stock at a price of $5 per share. On June 1, Troy purchased 2,000 shares of its own stock at a cost of $7 per share. On December 1, Troy resold ...
【单选题】Troy Corporation issued 50,000 shares of $1 par common stock at a price of $5 per share. On June 1, Troy purchased 2,000 shares of its own stock at a cost of $7 per share. On December 1, Troy resold ...
A.
Credit to Paid-in Capital from Treasury Stock Transactions, $2,000
B.
Credit to Treasury Stock, $14,000
C.
Gain on the Sale of Treasury Stock, $2,000
D.
Both A and
【简答题】时代新人应当有( )、有( )、有( )。
【单选题】What happened to Hellen after the fall of Troy?
A.
She was killed by her former husband Menelaus.
B.
She killed herself out of shame.
C.
She was driven out of Troy by Trojans.
D.
She was forgiven by her husband and her people.
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