柱是直接支撑梁架,垂直承受上部载荷的构件。柱子种类较多,依其所在位置,分为()。
A.檐柱
B.中柱
C.山柱
D.童柱
E.角柱
参考答案:A, B, C, D, E
B.C.G疫苗的制造是
A.形态变异
B.毒力变异
C.耐药性变异
D.菌落变异
E.以上都不是
It was Sarah's sister who she had great respect for that tricked her ________ carrying drugs. [ ]
A. in
B. to
C. into
D. from