下列哪项不会造成酸液缓冲罐罐底泵憋压()。
A.流程未导通
B.安全阀起跳
C.Y型过滤器堵塞
D.装车返回气接头未打开
参考答案:B
—— Is Tom still smoking ?
—— No.By next Saturday he _______ for a whole month without smoking a single cigarette.
A.will go
B.will have gone
C.will have been
D.has been going
低钙可以导致如下症状,除了()
A.婴儿手足抽搐症
B.婴幼儿枕秃
C.低钙惊厥
D.佝偻病
E.甲状腺功能亢进