单项选择题
已知江水的密度小于海水的密度,一艘潜水艇从江河潜航入大海,潜水艇受到浮力情况是()
A.变大些
B.不变
C.变小些
D.缺少条件无法判断
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单项选择题
Cleaning women in big cities usually get paid A.bya hour B.byan hour C.bythe hour D.byhours
A.bya
B.byan
C.bythe
D.byhours
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单项选择题
I came by sea and I had a 1ovelyjourney on Queen ElizabethII. A.不填;the B.the;不填 C.不填:不填 D.the;the
A.
B.不填;the
C.the
D.不填:不填
E.the
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