朝鲜蓟又称洋蓟,以肥大而嫩的花托和肉质的鳞片状______供食用。
A.花柄
B.花苞
C.雄蕊
D.雌蕊
参考答案:B
A neonate receives an Apgar score at 1 and 5 minutes after birth. The 5-minute Apgar score is more predictive for which of the following
A. Residual neurologic damage.B. Residual respiratory depression.C. Congenital heart defects.D. Gestational age of the neonat
制动拉杆是连接两杠杆的零件,仅起力的传递作用而不能改变力的()。
A、大小
B、方向
C、大小和方向
D、方向和扭矩