从病理生理角度看,休克的本质是
A.低血压
B.交感-肾上腺系统兴奋
C.组织和细胞缺氧
D.酸中毒
E.心血管功能紊乱
参考答案:C
中风后遗症期是指发病()
A.2周以上
B.l个月以上
C.2个月以上
D.3个月以上
E.半年以上
The International Association of Lighthouse authorities (IALA) buoyage system “A” uses some types of marks to distinguish safe navigation? Which type(s) does(do) not belong to the system?()
A.lateral marks and cardinal marks
B.safe water marks
C.isolated danger marks and special marks
D.dangerous water marks