酸液缓冲灌罐底泵安全阀起跳压力为()。
A.0.9MPa
B.0.98MPa
C.0.96MPa
D.1MPa
参考答案:B
33.It has escaped me we stopped in the last class.Tom,would you tell me so that I
can go on with my lecture?
A.where it was that
B.that it was when
C.that what it was
D.how it was that
班主任在领导班级的过程中,不是以直接的方式管理班级,而是以间接的方式引导学生属于()领导方式
A.民主的
B.迁就的
C.权威的
D.放任的