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【单选题】
可使液压缸锁紧,液压泵不卸荷的是( ) 型阀。A.
O型
B.
P型
C.
M型
D.
Y型
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举一反三
【单选题】Hermia does not agree with Lysander's proposal that they sleep on one pillow. Her reason is that
A.
Lysander snorts when he sleeps.
B.
She does not like Lysander.
C.
She thinks Lysander should be her guard when she sleeps.
D.
She does not believe in what Lysander says.
E.
She hopes to keep her chasitity.