单项选择题 Furthermore, we wish to point out that for such articles as window glass, porcelains, etc．______ additional Risk of Breakage has been insured, the cover is subject to a franchise of 5%. A．even B．even if C．as if D．if

单项选择题 下列（）可贮存较丰富的地下水资源。

单项选择题 抢救急性CO中毒的关键是及时纠正脑缺氧，最有效的措施是( ) A．高压氧舱治疗 B．使用呼吸兴奋剂 C．采用人工呼吸器 D．输新鲜血或换血疗法 E．解除脑血管痉挛，静脉滴注lg/L普鲁卡因