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【单选题】
患者男,28岁,酗酒后突发剧烈上腹绞痛10h伴呕吐、冷汗、面色苍白入院,查体:T39.1°C,p110次/分,BP83/60mmHg。腹上区压痛及反跳痛阳性,腹肌紧张,Grey-Turner征阳性。实验室检查:血清淀粉酶升高,血钙降低,下面最可能的诊断是A.
急性水肿型胰腺炎
B.
出血坏死型胰腺炎
C.
急性胃穿孔
D.
胃溃疡
E.
胆石症
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举一反三
【单选题】The relaxation of skeletal muscle relies on the activity of the ________, which decreases cytoplasmic calcium concentration.
A.
ryanodine receptor
B.
dihydropyridine (DHP) receptor (L-type calcium channel)
C.
acetylcholine receptor
D.
Ca2+ ATPase
【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】Which of the following statements is NOT true?
A.
Today you can get calcium without eating any high-fat or high-calorie foods by choosing skim mill or low-fat yogurt.
B.
Calcium plays an important role in the movement of protein and nutrients inside cells.
C.
You can rely on pills instead of a calcium-rich diet to take enough calcium.
D.
If you want to absorb calcium, you should expose yourself to the sun's rays.
【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
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