【单选题】屋面刚性防水工程量计算规则,下列说法正确的是( )。
A.
按设计图示尺寸以面积计算,扣除房上烟囱等所占面积
B.
按设计图示尺寸以体积计算,扣除房上烟囱等所占体积
C.
按设计图示尺寸以面积计算,不扣除房上烟囱等所占面积
D.
按设计图示尺寸以体积计算,不扣除房上烟囱等所占体积
【单选题】五味子为辽宁道地药材,具有收敛固涩、益气生津、补肾宁心的功效,其主要活性成分是( )。
【判断题】五味子主要活性成分为黄酮类化合物,此外还有挥发油、生物碱、有机酸等化学成分。
【单选题】With modem audio -recording equipment, there is (are) ______.
A.
no difficulty in recording speakers in many face -to-- face situations or on the telephone
B.
still some difficulties in recording speakers in many face -to -face situations or on the telephone
C.
no difficulty in recording speakers in many face - to - face situatious but some on the telephone
D.
some difficulties in recording speakers in many face - to - face situations but not an the telephone
【单选题】题干: 深水区抛锚,锚地最大水深一般不得超过一舷锚链总长的: