癫下列哪项不符合

A:遗传因素和环境因素均可影响痫性发作 B:女性患者通常在月经期和排卵期发作频繁 C:按照病因可分特发性癫和症状性癫 D:每一位癫患者只有一种发作类型 E:癫的临床表现可分痫性发作和癫症两方面

Gm系统

某船GM很大（）。

A:其动稳性能一定很好 B:其动稳性性能一定很差 C:但无法确定其动稳性的好坏 D:但动稳性性能与GM无关

多模光纤的纤芯标称直径为( )um或50/125gm，其标称波长为( )nm。

A:62.5/125 B:82.5/125 C:85和130 D:850和1300

125，135，125，55，( )。

A:-175 B:-195 C:-155 D:-135

Why scientists say no to GM cotton

A:Because the cotton was genetically modified. B:Because the cotton was found to damage the environment. C:Because the cotton harms the bollworm. D:Because Monsanto dismissed the research.

Why scientists say no to GM cotton

A:Because the cotton was genetically modified. B:Because the cotton was found to damage the environment. C:Because the cotton harms the bollworm. D:Because Monsanto dismissed the research.

The abbreviation "GM" is used to represent the _____.

A:height of the metacenter B:fighting arm C:righting moment D:metacentric height