【单选题】The relaxation of skeletal muscle relies on the activity of the ________, which decreases cytoplasmic calcium concentration.
B.
dihydropyridine (DHP) receptor (L-type calcium channel)
C.
acetylcholine receptor
【简答题】下列不属于Word窗口组成部分的是( )
【简答题】Besides calcium and iron, athletes also need______which will help them access energy and pr them from getting ill.
【单选题】下列不属于Word窗口组成部分的是( )
【单选题】如果某种东西你需要,但是你不愿为此花钱,那就说明这类东西存在( )。
【判断题】高尔基体和内质网都能进行蛋白质的运输,二者的主要区别是:高尔基体具有分拣作用,内质网则无
【单选题】We may infer that 'iodine, fluoride and calcium' are______.
A.
substances which act positively or negatively on man's health
B.
harmful substances in the water supply
C.
substances which help provide breeding places for pests
D.
substances contributory to good health
【单选题】下列不属于word窗口组成部分的是( )。
【单选题】下列不属于Word窗口组成部分的是( )