木贼属的孢子虽然为同型，但颈卵器和精子器有配子体上有同体或异体的，这可能与（）有关，基质营养良好时多为（）性，否则多为（）性。
参考答案：营养条件；雌；雄
甲因手头拮据而盗窃旅客提包，不料盗窃到手的提包里是两把六四式手枪和3 000元人民币，因此他的行为是______。
A．盗窃罪
B．盗窃枪支、弹药罪
C．无罪
D．盗窃罪和盗窃枪支、弹药罪
Which vessel is NOT to be regarded as restricted in her ability to maneuver?（）.
A.A vessel transferring provisions while underway
B.A pushing vessel and a vessel being pushed when connected in a composite unit
C.A vessel servicing a navigation mark
D.A vessel launching aircraft
