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【判断题】
正常齿制渐开线标准齿轮不发生根切现象的条件是被加工齿轮的齿数不小于 17 齿。( )A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Why has Mary been absent from class?
A.
She has been ill.
B.
She has been in Mexico.
C.
Some relatives have been visiting her.
【多选题】税务机关在税款征收中可以根据不同情况采取相应的税款征收措施,下列各项中,属于税款征收措施的有( )。
A.
罚款
B.
责令缴纳
C.
阻止出境
D.
由税务机关核定应纳税额
【单选题】I learned _____ the city for a long time. [ ]
A.
she has been to
B.
she has gone to
C.
she had been in
D.
she had gone to
【多选题】税务机关在税款征收中可以根据不同情况采取相应的税款征收措施,下列各项中,属于税款征收措施的有( )
A.
罚款
B.
责令缴纳
C.
阻止出境
D.
由税务机关核定、调整应纳税额
【简答题】It's five years since his brother ______ (join)the army．
【简答题】A．She has been working a lot recently. B．She has been taking care of her sick mother. C．She has been taking two night classes. D．She has been looking for a new job.
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