利用垫片调整轴承间隙时，要求两侧的垫片数量（）。
A.少并相等
B.多并相等
C.随意
D.少并不等
参考答案：A
We shouldn't have come north for Christmas vacation. If we _______, we wouldn't be stuck in the snow right now.
A．wasn't
B．didn't
C．hadn't
D．weren't
瘀血内阻时，口渴的表现是( )
A．口渴多饮 B．大渴喜冷饮 C．但欲漱水不欲咽 D．口渴而不多饮 E．口渴欲饮，水入即吐
