车床中拖板导轨与主轴垂直度误差,将使工件平面出现()。
A.锥度
B.盆形
C.凸台
D.斜度
参考答案：B
Playing on a frozen sports field sounds like a lot of fun. Isn't it rather risky, ________?[ ]
A. though
B. also
C. either
D. too
患者遍体浮肿，皮肤绷紧光亮，兼气粗喘满，倚息不得卧，脉弦有力，系胸中有水，可用（）
A.猪苓汤
B.葶苈大枣泻肺汤
C.五苓散
D.真武汤
E.五皮饮
