钛的比重是不锈钢的一半,抗腐蚀性是不锈钢的()。
参考答案:150倍
When something ________ me, I always go and ________. [ ]
A. worries; talk to her
B. worries; talks to her
C. worry; talk to her
D. worrying; talking to her
女性患者,55岁,在其子婚礼上由于兴奋而突发心绞痛,可用药物为()
A.硝酸甘油舌下含服
B.奎尼丁口服
C.利多卡因肌肉注射
D.苯妥英钠注射
E.普鲁卡因胺口服