下列关于握手的说法中正确的是（）。 A.初次见面握手时间应控制在3秒钟内 B.无

体外抗菌活性最强的喹诺酮类药物是

A．依诺沙星

B．氧氟沙星

C．环丙沙星

D．吡哌酸

E．洛美沙星

钢质为Q215的型钢的屈服强度大于或等于（）

A．215N/cm²

B．215Mpa

C．215kg/mm²

下列需进行出境植物及其产品报检的有( )

A．出口到泰国的30吨土豆

B．参加国外农业博览会的100克优良大豆样品

C．通过快递方式向美国出口的l0克种子

D．供应澳门的一车青菜

The produce departments of the future may look like nothing on earth, and with good reason. Chinese scientists have been growing tomatoes the size of softballs, cucumbers as long as baseball bats and other outsize fruits and vegetables, using seeds that have been shot into space. The seeds are then exposed to seven types of extraterrestrial conditions, from zero gravity and cosmic radiation to subatomic particles. (46) As these space veggies grow back on earth, they are selected for desirable traits--bulk, appearance or certain nutrients--then bred through successive generations to ensure that the mutations are consistent.
Chinese scientists don’t understand exactly how a trip into space alters the seeds’ DNA and yields such effects, but it’s not just size that changes. (47) Tong Yichao, whose firm, the Beijing Flying Eagle Green Foods Group, has been sending seeds and seedlings aboard Chinese spacecraft since 1999, says it has grown space tomatoes with 27 percent more of the antioxidant beta carotene than ordinary ones, and six-foot-tall cotton plants that produce longer, more flexible threads. Using conventional methods, "a scientist might create just three new plants in his lifetime," says Tong. "We’ve developed more than 50 since 1999."
(48) A dozen or so Chinese firms are paying up to $ 45 000 a gram to place various flora aboard satellites and manned spacecraft. The long-term goal: to feed more people and help endangered species escape extinction. To date, nearly 3 000 botanical species-including garden vegetables, medicinal herbs and flowers--have been sent into orbit and brought back to earth.
(49) The commercial promise of China’s space veggies has yet to, er, bear fruit. It’ s legal to sell the cosmic produce, and commercial farms have purchased some space plants. But most are being developed in labs or experimental greenhouses because no one wants to go to market before the safety and quality of the produce have been established. Even so, the idea of space flora is proving irresistible to a novelty-loving Chinese public. (50) When Tong displayed a handful of monster space eggplants--the largest of which weighed more than four pounds--at an expo, one disappeared before the show opened. Hot stuff, for sure.

渎职罪是指国家机关工作人员利用职务上的便利或者徇私舞弊、滥用职权、玩忽职守，妨害国家机关的正常活动，损害公众对国家机关工作人员职务活动客观公正性的信赖，致使国家与人民利益遭受重大损失的行为。
根据上述定义，下列行为属于渎职罪的是( )。

A．某市公安局警察在侦破一起特大抢劫杀人案的过程中，对犯罪嫌疑人刑讯逼供，致其死亡
B．某国企领导在接受了下属50万元的贿赂后，将其亲属违规招录，顶替了正常招录的人员名额
C．某县土地管理局局长明知自己同学公司的土地使用申请不符合国家相关规定，还是批准了，导致百亩良田被无端占用
D．某区财政局工作人员利用自己职务上的便利，先后秘密侵吞单位500万元资金，挥霍一空