Lb3C4066冲击钻进中掉钻具的原因有哪些？

属于举高消防车的有（）。

A、泡沫消防车

B、水罐消防车

C、云梯消防车

D、泵浦消防车

某文艺团体为“希望工程”募捐组织了一场义演，共售出1000张票，其中成人票每张8元，学生票每张5元，筹得票款6950元．求成人票与学生票各售出多少张？

解法1：设售出的成人票为x张，则根据题意列方程：

解法2：设所得的成人票款为y元，那么所得的学生票款为 _________ 元，则根据题意列方程：

患者，男性，30岁，上颌窦癌术后5个月，癌转移。患者口腔内有脓性分泌物，细菌培养结果为铜绿假单胞菌感染。

口腔护理后，护士处理用物的正确方法是（）。

A.过氧乙酸浸泡后清洗

B.高压灭菌后再清洗

C.先刷洗干净再灭菌

D.清洗后日光下暴晒

E.0.02%呋喃西林溶液浸泡后清洗

阅读理解

     Christmas came in extravagant(奢侈的) fashion to the Muslim desert emirate(酋长国) of Abu

Dhabi as a shining hotel uncovered a bejeweled(饰以珠宝的) Christmas tree valued at more than

11 million dollars on Wednesday.

    It is "the most expensive Christmas tree ever" with "a value of over 11 million dollars", said Hans

Olbertz, general of Emirates Palace Hotel, at its inauguratuion(落成典礼).

    The 13-metre (40-foot) evergreen, located in the gold hall of the hotel, is decorated with silver

and gold bows, ball-shaped decorations and small white lights. But the necklaces, earrings and other

jewellery hung around the tree's branches are what give it a record value. "It holds a total of 181

diamonds, pearls, sapphires and other precious stones," said Khalifa Khouri, owner of Style Gallery,

which provided the jewellery.

     "The tree itself is about 10,000 dollars," Olbertz said. "The jewellery has a value of over 11 million

dollars-I think $1,141,150."

    "This will probably be an entry into the Guinness book of world records," Olbertz said, adding that

Emirates Palace planned to contact the organization about the tree which is to stay until the end of the

year.

    Asked whether the tree might be against religious sensibilities in the United Arab Emirates, where