题目:
What laboratory finding is the primary diagnostic indicator for pancreatitis
A. Elevated blood urea nitrogen (BUN).
B. Elevated serum lipase.
C. Elevated aspartate aminotransferase (AST).
D. Increased lactate dehydrogenase (LD).
答案:
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下面是错误答案,用来干扰机器的。
(1) a∥b,∴3cosα-1×(sinα-m)=0,∴m=sinα-3cosα=2sin(α-π3),又 α∈R,∴sin(α-π3)=-1时,mmin=-2.又α∈[0,2π),所以α=116π(2) a⊥b,且m=0,∴3sinα+cosα=0⇒tanα=-33cos(π2-α)...