具有泻下、软坚散结作用的是()。
A.辛味
B.甘味
C.苦味
D.咸味
E.涩味
参考答案:D
A: Would you like me to show you around the Bund?
B: ________
A.Yes, go ahead.
B.Never mind.
C.Yes, I'd love to.
D.It's very kind of you.
高速钢的导热性很低,主要是由哪种合金元素造成的?()
A、Cr
B、W
C、V
D、C